Physics Homework Questions & Answers Archive

Question 23 The motion or particles that contribute to thermal energy are o translational o all of the above o rotational o vibrational

X-rays have a wavelength small enough to image individual atoms, but are challenging to detect because of their typical frequency. Suppose an X-ray camera uses X-rays with a wavelength of 9.24 nm. Calculate the frequency of the X-rays. Be sure your answer has the correct number of significant digits. PHz

PROBLEMAS DE MRUV 1. Cuánto equivale la aceleración en el tramo de 0-2 segundos y 4-5 segundos de acuerdo al gráfico?

Given A=[[-7, -3, -3, 8], [-3, -1, -5, 10]]. Find its transpose. [[8, -3, -3, -7], [10, -5, -1, -3]] [[-7, -3], [-3, -1], [-3, -5], [8, 10]] [[-8, -10], [3, 5], [3, 1], [7, 3]] [[8, 10], [-3, -5], [-3, -1], [-7, -3]]

Which is prevented when a low concentration of oxygen is given to a client with chronic obstructive pulmonary disease (COPD) rather than a high concentration of oxygen? Decrease in red cell formation Rupture of emphysematous bullae Depression of the respiratory center Excessive drying of the respiratory mucosa

Refer to the accompanying data display that results from a simple random sample of times (minutes) between eruptions of the Old Faithful geyser. The confidence level of 95% was used. Complete parts (a) and (b) below. TInterval (85.74,91.76) x̄=88.75 Sx=8.897431411 n=36 a. Express the confidence interval in the format that uses the "less than" symbol. Round the confidence interval limits given that the original times are all rounded to one decimal place. min <μ< min (Round to two decimal places as needed.)

Which of the following is NOT a factor that can support a tidal bore (A) A lunar neap tide (B) A large tidal range (C) Incoming tides funneled to a narrow area through a broad bay D The incoming tide is funneled into a shallow and narrow area like a channel or inlet

Riders on the Power Tower are launched skyward with an acceleration of 4 g, after which they experience a period of free fall. (Figure 1) Part A What is a 60 kg rider's apparent weight during the launch? Express your answer with the appropriate units. w= Value Units Part B What is a 60 kg rider's apparent weight during the period of free fall? Express your answer with the appropriate units. w= Value Units

Find the following matrix product, if it exists. [ left[beginarrayrr -3 9 -5 -7 endarrayright]left[beginarrayl 8 7 endarrayright] ] Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The matrix product is B. The product does not exist.

With the information given below, can you conclude that triangle LMN is congruent to triangle XYZ? Yes No

Calculate the wavelength of a neutron traveling at 2.65 x 10^5 m/s. Mass of neutron is 1.67 x 10^-27 kg.

A circuit that is ground-switched is connected to ground: Only when the load is connected to positive. Only when the load is being commanded on. All the time.

The heights of fully grown trees of a specific species are normally distributed, with a mean of 54.0 feet and a standard deviation of 5.00 feet. Random samples of size 20 are drawn from the population. Use the central limit theorem to find the mean and standard error of the sampling distribution. Then sketch a graph of the sampling distribution. The mean of the sampling distribution is μx= . The standard error of the sampling distribution is σx̅= . (Round to two decimal places as needed.)

Question 42 (1 point) If you increase the frequency of a wave on a string by wiggling your hand with greater frequency, what else will change? A) The wavelength will get longer. B) The wavelength will get shorter. C) The wave speed will increase. D) The wave speed will decrease.

Let θ be an angle such that tan θ = 4/7 and cos θ > 0. Find the exact values of sec θ and sin θ. sec θ = sin θ =

Question 18 2 pts The measure of a body's resistance to being rotated is its angular momentum. True False

2. A 0.65 meter long string is stretched to a tension of 3.75 N . A wave with a frequency of 185 Hz and a wavelength of 0.44 m travels on the string. What is the mass of the string?

QUESTION 5 - 1 POINT The figure above shows a right triangle with dimensions in inches. If θ=55°, what is the length of x to the nearest inch? (Do not include units in your answer)

For the quadratic function f(x)=x^2+2x, answer parts (a) through (f). (a) Find the vertex and the axis of symmetry of the quadratic function, and determine whether the graph is concave up or concave down.

is (are) included in the benefit(s) list of grounding the secondary. voltage increase resistance decrease common-mode noise reduction none of the above

What are the ceiling and visibility conditions for LIFR (Low IFR Flight)? A. Ceiling less than 500 feet and/or visibility less than 1 mile B. Ceiling 500 to less than 1000 feet and/or visibility 1 to less than 3 miles C. Ceiling 1000 to 3000 feet and/or visibility 3 to 5 miles inclusive D. Ceiling greater than 3000 feet and visibility greater than 5 miles, inclusive sky clear

Based on the graph above, which statement best describes the graph? Answer O The two distributions have equal means and equal standard deviations. O The two distributions have equal means and standard deviations that differ by 4 units. O The two distributions have means that differ by 4 units and different standard deviations. O The two distributions have means that differ by 4 units and equal standard deviations. © 2024 Hawkes Learning

Consider the function y(t)=-5+2 cos (πt/3) a) Find the period. 1. 3 2. 6 3. 3/π 4. 2 5. 6/π 6. None of these

Calculate the derivative of the following function. y=cos(20t+1) dy/dt=□

Decremental means that the strength of the signal as it gets farther from the source. - decreases - increases - stays the same

The ~ speed of a particle is the ratio of the arc length traveled to the elapsed time, and the speed of a particle is the ratio of the change in the central angle to the elapsed time.

Begin by graphing f(x)=log5 x. Then use transformations of this graph to graph the given function. What is the vertical asymptote? Use the graphs to determine the given function's domain and range. h(x)=4+log5 x Determine the transformations that are needed to go from f(x)=log5 x to the given graph. Choose the correct answer below. A. The graph of f(x)=log5 x should be shifted 4 units to the right. B. The graph of f(x)=log5 x should be shifted 4 units to the left. C. The graph of f(x)=log5 x should be shifted 4 units downward. D. The graph of f(x)=log5 x should be shifted 4 units upward.

Question 4 True or False A catch block is a segment of code that can handle an exception that might be thrown by the try block that precedes it. (A) True (B) False Clear selection

Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (10,9) and find the correlation coefficient r and determine whether there is a linear correlation. d. What do you conclude about the possible effect from a single pair of values?

Find the value of the expression. Simplify fully. i^5

A same-size iron ball and wooden ball are dropped simultaneously from a tower and reach the ground at the same time. The iron ball has a greater a. all of the above b. acceleration. c. none of the above d. momentum. e. speed.

A function that satisfies Laplace's equation is called a harmonic function. (a) Is (f(x, y, z)=x^2+y^2-2 z^2) harmonic? What about (f(x, y, z)=x^2-y^2+z^2) ? (b) We may generalize Laplace's equation to functions of (n) variables as [ partial^2 f / partial x1^2 + partial^2 f / partial x2^2 + cdots + partial^2 f / partial xn^2 = 0 ] Give an example of a harmonic function of (n) variables, and verify that your example is correct.

Three blocks are connected on the table as shown below. The table is rough and has a coefficient of kinetic friction of 0.440. The objects have masses of 4.00 kg, 1.00 kg, and 2.00 kg, as shown, and the pulleys are frictionless. (a) Draw free-body diagrams for each of the objects. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Determine the acceleration of each object and their directions. (c) Determine the tensions in the two cords.

Calculate the ideal banking angle in degrees for a gentle turn of 1.4 km radius on a highway with a 94.7 km/hr speed limit, assuming everyone travels at the speed limit.

max height = v t + 1/2 a t^2 (meters)

Which of the following looks the brightest in the sky? a star with magnitude 10 a star with magnitude 1 a star with magnitude 6 a star with magnitude -1 you can't fool me, all of the above look equally bright from Earth

A plastic beach ball has radius 20.3 cm and mass 0.100 kg, not including the air inside. Assume the air density is 1.30 kg / m^3 both inside and outside. What is the buoyant force on the beach ball in air? The thickness of the plastic is about 2.00 mm -negligible compared with the radius of the ball. Enter a positive value if the force is upward and enter a negative value if the force is downward.

Find the value of the linear correlation coefficient r. The paired data below consist of the costs of advertising (in thousands of dollars) a certain pharmaceutical drug and the number of prescriptions written (in thousands): Cost of Advertising: 9, 2, 3, 4, 2, 5, 9, 10 Number of Prescriptions: 85, 52, 55, 68, 67, 86, 83, 73 0.235 0.246 -0.071 0.708

Question 17 1 pts Technician A says that the micrometer operates on a simple principle: The spindle has 20 threads per inch, so one revolution of the thimble will advance or retract the spindle 1 / 20 of an inch. Technician B says that spindle has 50 threads per inch, so one revolution of the thimble will advance or retract the spindle 1 / 50 of an inch. Who is correct? A only B only Both A and B Neither A nor B

A(n) involves magnetic fields, radio waves, and computerized enhancement. A. PET B. MRI C. CT D. TMS Please select the best answer from the choices provided A B C D

The next two questions refer to the following situation. 19. A bucket of water is swung around in a vertical circle with enough speed so that the water does not leave the bucket. The total mass of the bucket and water is 5 kg. What is the minimum speed of the bucket so that the water does not leave the bucket? (A) 1.6 m / s B) 2.7 m / s C) 3.2 m / s D) 4.6 m / s E) 5.0 m / s

Magnification Optics A 3.50 cm tall object is held 24.8 cm from a lens of focal length 16.0 cm . What is the image height? (Mind your minus signs.) (Unit = cm) Submit

Which set has the lowest potential energy? A) a +2 charge and a +2 charge separated by distance of 2x B) a +2 charge and a +2 charge separated by distance of x C) a +2 charge and a -2 charge separated by distance of 2x D) a +2 charge and a -2 charge separated by distance of x

¿Cuál es la velocidad del libro después de caer? 0.90 s ? Supongamos que el sistema de coordenadas es positivo. Redondee la respuesta a dos digitos significativos.

What is the combined resistance and total current a. 13 K Ohm, 0.7 ma b. 625 Ohm, 14.4 ma c. 0.7 K Ohm, 13 ma d. 13 Watts, 0.7 Volts per resister

A measure of the change in velocity of a moving object is called a speed b friction c acceleration d motion

Multiple Choice Question The moment of inertia, Ix of an area A with respect to the x axis is given by the equation . Ix=∫x dA Ix=∫y^2 dA Ix=∫y dA Ix=∫x^2 dA

Water is leaking out of an inverted conical tank at a rate of 10,000 cm^3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 m and the diameter at the top is 4 m. If the water level is rising at a rate of 20 cm/min when the height of the water is 2 m, find the rate at which water is being pumped into the tank.

Under which condition below would you expect a coarse-grained intrusive rock like diorite to form? A. Lava slowly flowing out of a fracture in Earth's surface B. Quick cooling below Earth's surface C. Slow cooling in the upper mantle D. Within a zone of fractured rocks below Earth's surface

Suppose the aqueous humor in a person's eye exerts a force of 0.315 N on the 1.3-cm² area of the cornea What is the pressure, in mm Hg, on the cornea? P=

Which statement is true about broadcast and collision domains?

A car is traveling at a speed of 104 km/h on the highway and has a small stone stuck between the treads of one of its tires. The tires have diameter 60.6 cm and are rolling without sliding or slipping. Part A What is the maximum speed of the stone as observed by a pedestrian standing on the side of the highway? Express your answer in kilometers per hour. Part B What is the minimum speed of the stone as observed by a pedestrian standing on the side of the highway? Express your answer in kilometers per hour.

Determine whether the table could represent a function that is linear, exponential, or neither. If the function is exponential or linear, find a function that passes through the points. If the function is neither exponential nor linear, type 'NONE'. (If exponential, write the form f(x)=a b^x, if linear, write the form f(x)=m x+b ) x 1 2 3 4 f(x) 70 49 34.3 24.01 f(x)=

A snowboarder of total mass, m starts from rest at a height, h₀, on a frictionless slope. She slides down the slope to the bottom, glides along a flat horizontal section, and then up a smaller slope to a horizontal plateau at a final height of hₜ=3.0 m. Finally, she encounters a k=6000 N / m spring which compresses by a displacement of Δx by the time it has brought the snowboard to a complete stop. Assume that both friction and air resistance are negligible. Derive a single, simplified algebraic expression for the amount, Δx, that the spring will be compressed in bringing the snowboard to a stop. Your expression for Δx should be in terms of some or all of the following variables: m, g, k, h₀, hfinal.

When a hot piece of copper is added to 45.5 g of 22.0°C water, their final temperature is 35.0°C. What is the heat gained by the water?

A spring stretches by 0.0154 m when a 4.91-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f=5.52 Hz?

The typical speed on the fan is: variable 1000 RPM 1250 RPM 1850 RPM

Find the distance between the points (5,8) and (10,1). Write your answer as a whole number or a fully simplified radical expression. Do not round. units

Refer to the vectors m through t at the right. Name all pairs of vectors that are opposites. Choose the correct answer below. A. m and p, p and q, n and r, o and t B. m and p, m and q, n and s; o and t C. m and q, n and r; r and s; n and s D. m and q, p and q, n and s; r and s

A device constructed to throw various objects can impart up to 500 joules of kinetic energy to the object being thrown. For a given mass, can throw the object. This is represented in the diagram given below, and it fits a power law model. Velocities above the line cannot be a line can. Write a MATLAB program that will accept a value of mass [kg] and desired velocity [m/s] from the user and classify them as "Possible" of labeled on the diagram. You must use polyfit to determine the equation of the line, and then use these values to do the classification. (i) Click the icon to view the diagram for mass and velocity. ``` clear dlc Mass = input ('Enter the mass of the object [kg]: ') % ask for the mass of the object Vel = input ('Enter the velocity of the object [m/s]: ') % ask for the velocity of the object MData =[520 40]; VData=[10 5 3.54]; Params = polyfit( log10(MData),log10(VData),1 ); m=Params(1); b=10^Params(2); VBound = b* Mass^m ; % the velocity corresponding to Mass if Vel <= VBound Class = 'possible'; else Class = 'not possible'; end % print the result ('It is %s to throw a %0.1f kg object at a velocity of %0.1f m/s.', Class, Mass, Vel); ```

Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 7% say their favorite sport is auto racing. You randomly select 300 adults and ask them to name their favorite sport. Complete parts (a) through (d). Determine whether a normal distribution can be used to approximate the binomial distribution. Choose the correct answer below. A. No, because nq < 5. B. No, because np<5. C. Yes, because both np ≥ 5 and nq ≥ 5. (a) Find the probability that the number of people who say auto racing is their favorite sport is at most 26. 0.8934 (Round to four decimal places as needed.) Sketch the graph of the normal distribution with the indicated probability shaded. A. B. C. D. The normal distribution cannot be used to approximate the binomial distribution.

Determine the following information given that f(x) = 5x / (16-x^2) Separate multiple answers by commas. If an asymptote or intercept does not exist, write none. Note that you may click a graph to enlarge it. (a) Horizontal Asymptote(s): y = (b) Hole(s): (Type an ordered pair.) (c) Vertical Asymptote(s): x = (d) x-intercept(s): (Type an ordered pair.) (e) y-intercept: (Type an ordered pair.)

O2 + O2 Reaction Coordinate O2 + O O + O E [kJ] What is the value of the activation energy for this reaction? Is this reaction exothermic or endothermic? What is the value of ΔE for the reaction?

For the scatterplot on the right, determine which, if any, of these functions might be used as a model for the data. Which of the functions above might be used as a model for the data? A. Exponential: f(x)=a e^(-k x), k>0 B. Logarithmic: f(x)=a+b ln x C. Exponential: f(x)=a e^(k x), k>0 D. Logistic: f(x)=a/(1+b e^(-k x)) E. Polynomial, not quadratic F. Quadratic: f(x)=a x^2+b x+c

An X-ray has a wavelength of 1.87 Å. Calculate the energy (in J) of one photon of this radiation. (10^10 Å=1 m). Round your answer to 3 significant figures.

A physical inventory of Liverpool Company taken at December 31 reveals the following. Item, Units, Cost, Market Car audio equipment Speakers, 340, 95, 103 Stereos, 255, 116, 105 Amplifiers, 321, 91, 100 Subwoofers, 199, 57, 46 Security equipment Alarms, 475, 155, 130 Locks, 286, 98, 89 Cameras, 207, 315, 327 Binocular equipment Tripods, 180, 75, 89 Stabilizers, 165, 102, 110 Required: 1. Compute the lower of cost or market for the inventory applied separately to each item. 2. If the market amount is less than the recorded cost of the inventory, then record the LCM adjustment to the Merchandise Inventory account. No, Date, General Journal, Debit, Credit , December 31, Cost of goods sold, , , , Merchandise inventory, ,

A certain part of an aircraft engine has a volume of 1 ft^3. If the part is made of aluminum, calculate the weight of the part (in lbs). Use eBook Table 4.4.

Select all statements below that you agree with. Note: You may be checking more than one box. No partial credit. f(2) is defined. lim x -> 2 f(x) exists. lim x -> 2 f(x) = f(2). The function is continuous at x=2. The function is not continuous at x=2.

A wagon is pulled along level ground by exerting a force of 30 pounds on a handle that makes an angle of 30° with the horizontal. How much work is done pulling the wagon 60 feet? W ≈ □ foot-pounds (Round to the nearest whole number as needed.)

A rotating light is located 16 feet from a wall. The light completes one rotation every 2 seconds. Find the rate at which the light projected onto the wall is moving along the wall when the light's angle is 20 degrees from perpendicular to the wall. feet per second

What is happening with the force labeled C? The force labeled C is an force, because it causes the object in motion to. A brick is placed on two different ramps surfaces to measure the amount of force needed to pull the brick up the ramp. What question is MOST likely this lab trying to answer?

The pair discusses the forces acting on the puck. Jadon mentions several forces. Which of the following forces act on the puck? (Select all that apply.) normal force centrifugal force air resistance tension gravitational force

calcular la magnitud del campo magnético: En un experimento diseñado para medir la magnitud de un campo magnético uniforme, los electrones se aceleran desde el reposo a causa de una diferencia de potencial de 350 V y después entran a un campo magnético uniforme que es perpendicular al vector velocidad de los electrones. Los electrones viajan a lo largo de una trayectoria curva debido a la fuerza magnética que se ejerce sobre ellos, y se observa que el radio de la trayectoria es de 7.5 cm. (En la figura 2 se muestra el haz de electrones curvo.)

A ball is thrown upward with a velocity of 19.6 m / s. What is its velocity after 3.00 s? Multiple Choice 19.6 down 9.80 m / s down 9.80 m / s up zero

A mass suspended by a spring that obeys Hooke's law (F=-k) will stretch the spring a distance x. In equilibrium, the spring pulls to balance the weight, mg, of the mass. The spring constant is "k", and the acceleration of gravity is "g". When the spring is stretched from equilibrium and released, the mass will oscillate up and down at a frequency f=1 / 2π√(k / m). Imagine a coiled spring that is extended a distance 0.09 by a mass hanging from it: it is then pulled down more and released so that it oscillates up and down. How long does it take to go up to its maximum and back down to its point of release? Give your answer in seconds but do not include the units when you enter it here on Blackboard. Hint: It does not depend on the mass!

Simplify the following expression. i^173

A ball is equipped with a speedometer and launched straight upward. The speedometer reading two seconds after launch is shown at the right; the ball is moving upward. At what approximate times would the ball be moving downward and display the following speedometer readings?

How many electrons are shared between two atoms in a triple bond? A 2 B 3 C 4 D 6

You wish to test the claim that the mean GPA of night students is larger than 2.6 at the .01 significance level. Based on a sample of 20 people, the sample mean GPA was 2.65 with a standard deviation of 0.08. When finding the critical value and test statistic, which distribution would we be using? - Normal distribution (invNorm for critical value) - T distribution (invT for critical value) - χ^2 distribution (inv χ for critical value) - F distribution (invF for critical value)

Determine graphically any (a) local extrema and (b) absolute extrema. f(x)=-3 x^4+8 x^3+6 x^2-25 x (a) List any local minima of f. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The local minimum/minima is/are (Round to the nearest integer as needed. Use a comma to separate answers as needed.) B. There are no local minima of f.

Suppose it is desired to compare two physical education training programs for preadolescent girls. A total of 82 girls are randomly selected, with 41 assigned to each program. After a three 6-week period on the program, each girl is given a fitness test that yields a score between 0 to 100. The mean and variances of the scores for the two groups are shown in the table. n X̄ s^2 Program 1 41 78.7 201.64 Program 2 41 75.3 259.21 The 90% confidence interval for the difference of two population means (μ1-μ2) is?

Which one of the following is an assumption made when using a two sample test of means with equal population standard deviations? The difference of sample means follows a normal distribution. The sampled populations are independent. The sample taken from each population must be at least 5.

Refer to the procedure, Part 1, 1st arrangement. Assume xcm=50.0 cm, 150.0 g is suspended from a hanger clamp at the position xcc=15.0 cm, and a hanger clamp is at position xc=75.0 cm. If each hanger clamp has a mass m=16.5 g, what mass must be added to xc in order to attain stable equilibrium? Sketch a diagram of the situation (refer to Fig. 8.3). ( 30 pts ) Consider Part 2 of the procedure. Determine the additional mass required for stable equilibrium. Meter stick: xcm=50.0 cm, m=150.0 g. Hanger clamp: xcc=0.0 cm, m=16.5 g .(30 pts)

Suponga que la rapidez del sonido en el aire es de 200 m / s y que una persona se para frente a un acantilado para producir eco. ¿Cuál es la mínima distancia a la que se debe parar, respecto al acantilado, para percibir el eco? A) 10 m B) 17 m C) 20 m D) 34 m E) 40 m

You are responsible for designing two free-standing water tanks. Both are to be 10 m high. The smaller tank has a 10 m x 10 m footprint, and the larger tank has a 100 m x 100 m footprint. (a) How does the water pressure on the tank walls vary between the top and the bottom of each tank? Justify your answer. (b) Sketch a design for the height-dependent wall thickness of each tank that will safely contain the water while minimizing the cost of building materials. (c) Discuss and justify any differences in your designs for the two tanks.

Part A Compared with the energy it takes to separate oxygen and hydrogen from water, how much energy is released when they recombine? More energy is released when they recombine. Less energy is released when they recombine. The same amount of energy is released when they recombine. No energy is released when they recombine. Submit Request Answer

Use the diagram and information box below to answer the question that follows. bond length = 9.60 x 10^-11 m m0 = 2.66 x 10^-26 kg mH = 1.67 x 10^-27 kg +z out of page Which of the following values represents the moment of inertia of the molecule shown about the z axis through the O atom? (A) 1.17 x 10^-47 kg · m^2 (B) 1.91 x 10^-47 kg · m^2 (C) 5.04 x 10^-47 kg · m^2 (D) 3.08 x 10^-47 kg · m^2 (E) none of the choices available

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 180 engines and the mean pressure was 4.6 lbs / square inch. Assume the standard deviation is known to be 0.5. If the valve was designed to produce a mean pressure of 4.5 lbs / square inch, is there sufficient evidence at the 0.02 level that the valve performs above the specifications? State the null and alternative hypotheses for the above scenario.

An ice tray contains 500 g of liquid water at 0°C. Calculate the change in entropy of the water as it freezes slowly and completely at 0°C.

Express the point given in Cartesian coordinates in cylindrical coordinates (r, θ, z). A) (9(1/2), 9(sqrt(3)/2),-6)=() () () B) (-9(1/2), 9(sqrt(3)/2),-6)=() () () C) (9(1/2),-9(sqrt(3)/2),-6)=() () () D) (-9(1/2),-9(sqrt(3)/2),-6)=() () ()

A 12-kg crate is pushed up an incline from point A to point B as shown in the figure. What is the change in the gravitational potential energy of the crate? +590 J -590 J +1200 J -1200 J This cannot be determined without knowing the angle of the incline.

On the electromagnetic spectrum, which is the correct order from highest frequency to lowest frequency?

d = (8 * 2.97 m * 635 * 10^-9 m) / 0.081 m =

Which climate zone would you be in if you were standing at 67 N 32 E ?

A gas is contained in a thick-walled balloon. When the pressure changes from 100 kPa to 90.0 kPa, the volume changes from 2.50 L to 3.75 L and the temperature changes from 303 K to K.

Find all exact solutions that are in the interval [0,2π) for each of the following equations. a) sin(5x-π/3)=-1 b) sin^2 4α+5 sin 4α-6=0

¿Qué técnica se utiliza para descomponer las señales de vibración en componentes de frecuencia individuales? Análisis de frecuencia. Análisis de amplitud. Espectroscopía. Espectrograma de frecuencia.

You're flying from Joint Base Lewis-McChord (JBLM) to an undisclosed location 216 km south and 134 km east. Mt. Rainier is located approximately 56 km east and 40 km south of JBLM. If you are flying at a constant speed of 800 km / hr, how long after you depart JBLM will you be the closest to Mt. Rainier?

Unit 9 Exam Which of the following observed phenomena can be explained with viscosity? Water forms droplets as it lands on a puddle. A bowling ball sinking more slowly through molasses than through water. Separating ethanol from water by distillation.

A plane flies northwest out of O'Hare Airport in Chicago at a speed of 400 km / hr in a direction of 150 degrees (i.e., 30 degrees north of west). The Canadian border is located a distance of 1500 km due north of Chicago. The plane will cross into Canada after approximately hours. a. 0.13 b. 0.23 c. 0.27 d. 3.75 e. 4.33 f. 6.49 g. 7.50 h. None of these are even close.

Use spherical coordinates to find the exact volume of the space inside the ellipsoid x^2/3^2 + y^2/4^2 + z^2/5^2 = 1 and outside the sphere x^2 + y^2 + z^2 = 2^2.

A police car is speeding north with its siren blaring. The sound waves from the siren increase in frequency a north of the car. b south of the car. c in all directions around the car. d none of the above

Here is a graph of the function f. Use the graph to find the following. If there is more than one answer, separate them with commas. (a) All values at which f has a local maximum: (b) All local maximum values of f :

A stone thrown downward with an initial velocity of 39.2 m / sec will travel a distance of s meters, where s(t)=4.9 t^2+39.2 t and t is in seconds. If a stone is thrown downward at 39.2 m / sec from a height of 411.6 m, how long will it take the stone to hit the ground? It will take seconds to hit the ground.

Question 9 of 13 This quiz: 13 point(s) possible This question: 1 point(s) possible The comprehensive graphs of four polynomial functions are shown in A-D. [Four graphs of polynomial functions labeled A, B, C, and D are shown] Which of the graphs cannot be that of a cubic polynomial function? The graph(s) in [ ] cannot be the graph of a cubic polynomial function. (Type A, B, C, or D. Use commas to separate answers as needed.)

Five identical cylinders are each acted on by forces of equal magnitude. Which force exerts the biggest torque about the central axes of the cylinders?

Find the limit. Use l'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. lim as x approaches infinity of sqrt(x) * e^(-x / 2)

2.1.10 señale a qué medida corresponde la lectura en el micrómetro del siguiente ejemplo Micrómetro 0-25 mm

A bullet with mass 15 g is traveling at 350 m / s when it strikes a stationary wooden object with mass 500 g. The bullet emerges on the other side of the object but has slowed to 75 m / s. What is the kinetic energy of the wooden object?

Use the given conditions to write an equation for the line in point-slope form and general form. Passing through (7,-8) and perpendicular to the line whose equation is x-7 y-9=0 The equation of the line in point-slope form is (Type an equation. Use integers or fractions for any numbers in the equation.)

Solve the problem. A boat is anchored off a small island. From the bow of the boat, 36 ft of anchor line is out with 4 ft of line above the water. The angle that the line makes with the water is 26 degrees. How deep is the water? Round to the nearest foot. Select one: a. 29 ft b. 16 ft c. 32 ft d. 14 ft

The height in feet of a projectile with an initial velocity of 64 feet per second and an initial height of 80 feet is a function time in seconds given by h(t)=-16 t^2+64 t+80 . (a) Find the maximum height of the projectile. ft (b) Find the time t when the projectile achieves its maximum height. t= sec (c) Find the time t when the projectile has a height of 0 feet. t= sec

A sample of nitrogen gas was collected via water displacement. Because the nitrogen was collected via water displacement, the sample is saturated with water vapor. If the total pressure of the mixture at 21°C is 1.227 bar, what is the partial pressure of nitrogen? The vapor pressure of water at 21°C is 18.7 mmHg. PN2= bar

What's the slope of the terminal side of θ, the line passing through the origin (0,0) and the point (x, y)? Slope = rise/run

Increased voltage amplitude produced by the pulser increase the of the ultrasound pulses produced by the transducer. Intensity period listening time frequency

Content Statistics Five-number summary and interquartile range The following are the ages of 14 physics teachers in a school district. 24,27,28,35,40,45,45,50,51,54,54,56,57,58 Notice that the ages are ordered from least to greatest. Give the five-number summary and the interquartile range for the data - Five-number summary - Minimum: - Lower quartile: - Median: - Upper quartile: - Maximum: - Interquartile range:

A woman standing on a cliff is watching a motorboat through binoculars as the boat approaches the shoreline directly below her. If she is standing 100 feet above the water level and if the boat is approaching at 10 feet per second, at what rate is the angle of her head decreasing when the boat is 200 feet from the shore? radians per second The problem asks for a rate of decrease, so enter a positive number.

Question 11 2.5 Poir If urine has a density of 1.08 g / mL, what would be the mass of a 125 mL urine sample? (A) 135 g (B) 0.00864 g (C) 116 g (D) 125 g

Question number 19 According to the Kinetic Molecular Theory, if the temperature increases, the kinetic energy - Does not change - Decreases - Increases

Two airplanes leave an airport at the same time. The velocity of the first airplane is 740 m / h at a heading of 39.3°. The velocity of the second is 620 m / h at a heading of 109°. How far apart are they after 2.1 h? Answer in units of m.

Mars has a mass of 6.42 × 10^23 kg. Phobos has a mass of 1.07 × 10^16 kg. The average distance from Mars's center to Phobol's center is 9.38 × 10^6 m. Calculate the gravitational force that Mars exerts on Phobos.

Et 208V It A Rt Ω Pt W E1 V I1 A R1 150 Ω P1 w E2 V I2 A R2 8000 Ω P2 W E3 V I3 A R3 5050 Ω P3 W E4 V I4 A R4 65500 Ω P4 W E5 V I5 A R5 2500 Ω P5 W E6 V I6 A R6 2300 Ω P6 W

REACCIONES SN1 Y SN2 1. ¿Qué tipo de reacción ocurre con inversión de la configuración? a) SN1 (b) SN2 c) SNA d) SEA

For an ideal gas, the pressure of the gas is proportional to the kelvin temperature ( Law). inversely, Avogadro's directly, Gay-Lussac's inversely, Gay-Lussac's directly, Avogadro's

An object at rest begins to rotate with a constant angular acceleration. If this object has an angular speed ω at time t₁, what will the angular velocity be at time t₂=2t₁? (a) 1/4 ω (b) 4 ω₁ (c) 20 (d) 1/2 ω (e) 1/√2 ω

Many people have imagined that if they were to float the top of a flexible snorkel tube out of the water, they would be able to breathe through it while walking underwater. However, they generally do not consider just how much water pressure opposes the expansion of the chest and the inflation of the lungs. Suppose you can barely breathe while lying on the floor with a 390 N weight on your chest. At what depth h could your chest be below the surface of the for you to be able to barely breathe, assuming that your chest wall has a surface area of 0.10 m^2 ? h= cm

A box of mass m=6.0 kg (moving in the positive x-direction) has a velocity of 2 m / s at t=0, and has a velocity of 4.0 m / s at time t=2.0 s. From t=0 to t=2.0 s, a force F2 acts on the box in the direction of motion. Find the work done by Fz. Express your answer with the appropriate units. W= Units

Dada los siguientes puntos A(3,4,-1); B(2,-3,4) y C(-1,-1,5) determinar: a) La ecuación vectorial b) La ecuación paramétrica c) La ecuación general o cartesiana

A gas mixture 80% methane and 20% ethane flowing at 4 MMSCFD from a gas sweetening unit is fed to a two stage compression process. The methane enters the first stage of compression at 500 kPa(g) at 70°F and leaves at 1500 kPa(g) at 190°F. The gas is then cooled to 90°F and fed to the second stage of compression. The gas leaves the second stage of compression at 4500 kPa(g) at 200°F. What is the volume flow rate of the gas, from the second stage? Express your answer in ft^3 / day.

Two mountain bikers take off from the same place at the same time. One travels north at 7 mph. How far apart are they after 4 hours?

If magmas do not have excess heat, the heat needed for melting must come from the crystallization of primary minerals in the magma. True

Identify any horizontal or vertical asymptotes in the graph. State the domain of f . A. The function has one horizontal asymptote, y=5. (Type an equation) B. The function has two horizontal asymptotes. The top asymptote is and the bottom asymptote is . (Type equations.) c. The function has no horizontal asymptotes. Determine the vertical asymptote(s). Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. A. The function has one vertical asymptote, x=3. (Type an equation.) B. The function has two vertical asymptotes. The leftmost asymptote is and the rightmost asymptote is (Type equations:) C. The function has no vertical asymptotes. State the domain of f. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. D=x x< (Type an integer or a fraction.) B. D=x x ≠ (Type an integer or a fraction. Use a comma to separate answers as needed.) c. D=x x ≥ b. (Type an integer or a fraction.) D. The domain is all real numbers.

Which process is inconsistent with the second law of thermodynamics? Match the words in the left column to the appropriate blanks in the sentences on the right. - appear from nowhere - matter - creation of energy from nothing - concentrate - concentration of energy from dispersed energy - energy - spread out - creation of matter from nothing - tendency of entropy to become a constant value as temperature tends to an infinite value The pervasive tendency for energy to spread out when not prevented from doing so is known as the second law of thermodynamics. Thus, of the four explanations, "the spontaneous creation of energy from nothing" is inconsistent with the second law of thermodynamics.

f(x)=x-6 g(x)=3/x FIND f/g, THEN GIVE ITS DOMAIN using an interval OR UNION OF INTERVALS SIMPLIFY YOUR ANSWER

The Bank of China Tower in Hong Kong is built in area prone to earthquakes and typhoons. Its architect I. M. Pei and its structural engineer Leslie Robertson applied an innovative approach. For strength, the diagonal braces and the vertical columns were integrated to one frame of a three dimensional space-truss. The diagonal braces are not restricted to the exterior tube of the structure; some penetrate the inner space of that tube. Each member of the space truss shares in supporting the vertical and lateral loads. Bank of China, Hong Kong. Left; the building as it is seen from the ground. Center: Schematics of the space-truss frame of the structure, viewed from the same side as the picture. The four corner columns A, B, C, and D and the center column X are indicated by heavy lines. The two shaded triangles indicate the tops of two quadrants. Right: Floor plans at different heights. The highest suction pressures occur around the tops of the three lower quadrants. As for aesthetics, the diagonal braces are emphasized on the skin of the building rather than being hidden, contributing to a motif that symbolizes the client: a growing bamboo plant. The building consists of four quadrants, each shaped as a triangular prism. The prisms that have truncated tops rise to different heights. Five columns define the edges of the prisms. Four columns rise from the corners of the square base of the building. A fifth column rises at the center of the building from the tip of the lowest prism at the twenty-fifth floor, to the tip of the building at the seventy-sixth floor. The central column serves as an edge to three prisms. Diagonal braces zigzag from the side columns to the center column. The rectangular bases of the prisms, which form the outside walls of the building, are braced with crossed diagonals. In addition, transverse trusses wrap around the building at selected levels. The strongest shear forces in an earthquake-jolt are experienced by the lower part of the building, which supports the weight of the entire building. To provide the necessary shear resistance at the lower parts of the building, the columns are connected at the fourth floor to a system of interior composite walls, consisting of steel plates and concrete slabs surrounded by slurry walls at the perimeter. The columns continue on to the foundations to resist overturning moments. It turned out that the cost of building this tower was significantly less than that of other high rises with comparable floor areas. Windows of high-rise buildings have to withstand suction forces due to strong winds. Estimates of those forces are obtained by a combination of computational methods and model-simulations in wind tunnels. A model of a skyscraper is much smaller than the real thing, and the air speed in the wind tunnel is usually much smaller than that of a hurricane, or a typhoon as it is called in East Asia. Formulas are used to scale up the results obtained from wind tunnel models. In wind tunnel testing of models of the Bank of China Tower in Hong Kong, it was found that suction pressure near the edges of the building are greater than those at the middle of the walls, and suction at certain corners were even higher than at the edges. Assume that for a tunnel wind-speed of 34 mph, the suction pressure at the center of an outer face of the building was 86 Pa and at the tip of one of the quadrants it reached 156 Pa. Estimate the suction pressure at those points for wind speeds of 170 mph, assuming that, but for the different speeds, the flow patterns of the wind are the same for both speeds. (Include units in your answers. More information.) at the center of the outer face at the tip of one quadrant

Solve each triangle using the labels as shown in Illustration 1 sides to three significant digits and angles to the nearest tent Illustration 1 12. B=17.5°, a=345 m, c=405 m

The primary mode of energy transfer when you use a heating blanket to get warm is conduction convection radiation

The speed of light is 2.998 × 10^8 m / s. How far does light travel in 4.0 μs? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. distance =

3 m^-4 / m^3

What is the mechanical advantage of the inclined plane shown in Question 1? (Give the answer as a numerical value, not X: Y or X to Y )

Question Post-3: An automobile of mass 1500 kg moving at 25.0 m / s collides with a truck of mass 4500 kg at rest. The bumpers of the two vehicles lock together during the crash. a) Compare the force exerted by the car on the truck with the force exerted by the truck on the car during the collision. Is one force larger than the other, or are they equal in magnitude to each other? b) What is the final velocity of the car and truck just after the collision? Show your calculations.

The diagram at the right is a snapshot in time of a wave moving along a rope. Which diagram below represents a wave vibrating with the same frequency and moving through a different rope with two times the speed?

Attempt 1: 5 attempts remaining. If two resistors with resistances R1 and R2 are connected in parallel, as in the figure, then the total resistance R, measured in Ohms (Ω), is given by: 1/R = 1/R1 + 1/R2 If R1 and R2 are increasing at rates of .3 Ω / s and .2 Ω / s, respectively, how fast is R increasing when R1=80 Ω and R2=100 Ω ? Ω / s

A certain sound is recorded by a microphone. The same microphone then detects a second sound, which is identical to the first one except that the amplitude of the pressure fluctuations is larger. In addition to the larger amplitude, what distinguishes the second sound from the first one? It is perceived as higher in pitch. It is perceived as louder. It has a higher frequency. It has a longer wavelength. A certain sound is recorded by a microphone. The same microphone then detects a second sound, which is identical to the first one except that it has twice the frequency. In addition to the higher frequency, what distinguishes the second sound from the first one? It is perceived as higher in pitch.

Step 1: Identify the slope y-intercept of the line. What is the slope of this line? y = -3/2 x + 4

What is the vertex of the function f(x)=-1/2x+8-5 ? (-8,-5) (-8,5) (8,5) (8,-5)

What would the speed of each particle be if it had the same wavelength as a photon of yellow light (λ=575.0 nm) ? proton (mass =1.673 x 10^-24 g) speed: □ m / s neutron (mass =1.675 x 10^-24 g) speed: □ m/s electron (mass =9.109 x 10^-28 g) speed: □ m / s alpha particle (mass =6.645 x 10^-24 g) speed: □ m / s

Two popular brands of tires for tractor-trailers are the Puma and the Eternal. Lashonda is a buyer for a major shipping company and wants to determine if there is any difference between the two brands of tire in the mean distance (in thousands of km) driven on them before they need to be replaced. In the company's testing lab, Lashonda tests a random sample of 13 Puma tires and a random sample of 15 Eternal tires. (These samples are chosen independently.) For the Puma tires, the sample mean distance (in thousands of km) until they would need to be replaced is 55.19 with a sample variance of 10.58. For the Eternal tires, the sample mean distance (in km) until they would need to be replaced is 51.37 with a sample variance of 94.24. Assume that the two populations of distances driven are approximately normally distributed. Can Lashonda conclude, at the 0.05 level of significance, that there is a difference between the population mean of the distances (in thousands of km) driven on Puma tires before they need to be replaced and the population mean of the distances (in thousands of km) driven on Eternal tires before they need to be replaced? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternate hypothesis H1.

Study the figure. If it has rotational symmetry, tell the angle of rotation.

QUESTION 2 If you lived in a remote, rural area of Texas, which energy source would you prefer for electricity in your home? A. Windmills; I have enough land for several turbines B. Coal; it's cheap C. Solar energy; I would save money in the long run D. Natural gas; it's cheap and available E. Nuclear energy; it's a proven technology

What does the hydrologic cycle describe? The hydrologic cycle describes how liquid and solid water move between the ocean, atmosphere and rivers. The hydrologic cycle describes how liquid and gaseous water move between the ocean, atmosphere, and rivers. The hydrologic cycle describes how liquid and solid water move between the ocean, atmosphere, and land. The hydrologic cycle describes how solid and gaseous water move between the ocean, atmosphere, and land. The hydrologic cycle describes how liquid and gaseous water move between the ocean, atmosphere, and land. Submit Request Answer

5. When power is supplied to the hoisting motor, the disc brakes are released and power is transmitted to the gear reducer, which drives the rope drum.

Decide whether the normal sampling distribution can be used. If it can be used, test the claim about the population proportion p at the given level of significance α using the given sample statistics. Claim: p ≠ 0.21 ; α=0.01; Sample statistics: p̂=0.15, n=160 Can the normal sampling distribution be used? A. No, because nq is less than 5. B. Yes, because both np and nq are greater than or equal to 5. C. Yes, because pq is greater than α=0.01. D. No, because np is less than 5. State the null and alternative hypotheses. A. H0: p=0.21 Ha: p ≠ 0.21 B. H0: p ≤ 0.21 Ha: p>0.21 C. H0: p ≥ 0.21 Ha: p<0.21 D. The test cannot be performed. Determine the critical value(s). Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The critical value(s) is/are . (Round to two decimal places as needed. Use a comma to separate answers as needed.) B. The test cannot be performed.

Suppose the probability of an event is 28/31. What are the odds for the event happening? The odds are to What are the odds against the event happening? The odds are to

Find the moment of inertia of this combination about an axis parallel to the bar and 0.500 m from it. Express your answer with the appropriate units.

A catcher's mitt recoils a distance of 12.9 cm in bringing a 142-gram baseball to a stop. If the applied force is 588 N, then what was the speed of the baseball at the moment of contact with the catcher's mitt?

For the function involving the variables listed, use your intuition or additional research, if necessary, to complete parts (a) through (c) below. (altitude, temperature) when climbing a mountain a. Describe an appropriate domain and range for the function. Choose the appropriate domain for the function below. A. The domain is all altitudes of interest or 0 ft to 15,000 ft. B. The domain is all temperatures corresponding to altitudes of interest or 0°F to 90°F. C. The domain is all temperatures corresponding to altitudes of interest or 70°F to 90°F. D. The domain is all altitudes of interest or 0 ft to 50,000 ft.

Force and Motion Concepts Quick Check 3 of 5 While you push a box you begin to decrease the force you are exerting on the box. When will the box reach static equilibrium? (1 point) When Fpush = Ffriction When Fpush > Ffriction When Fpush < Ffriction The box will not reach static equilibrium.

A 0.750 mol sample of Xe gas is confined in a 18.7 liter container at 30.8°C. If the temperature of the gas sample is lowered to 8.10°C holding the volume constant, the average molecular speed will increase decrease remain the same not enough information to answer the question

A glider of mass 0.240 kg is on a frictionless, horizontal track, attached to a horizontal spring of force constant 6.00 N / m. Initially the spring (whose other end is fixed) is stretched by 0.100 m and the attached glider is moving at 0.400 m / s in the direction that causes the spring to stretch farther. What is the total mechanical energy (kinetic energy plus elastic potential energy) of the system? Express your answer with the appropriate units. When the glider comes momentarily to rest by distance is the spring stretched? Express your answer with the appropriate units. x= Value Units Units input for part B

A hot-air balloon is 150 ft above the ground when a motorcycle (traveling in a straight line on a horizontal road) passes directly beneath it going 30 mi / hr (44 ft / s). If the balloon rises vertically at a rate of 7 t / s, what is the rate of change of the distance between the motorcycle and the balloon 10 seconds later? The rate of change of the distance between the motorcycle and the balloon after 10 seconds is about ft / s. (Round to two decimal places as needed.)

For the following, indicate if a discrete or a continuous random variable provides the best definition. The number of cars produced annually by a major manufacturer Choose the correct answer below. Continuous Discrete

reach graph below, state whether it represents a function. Function? Graph 1

One of the reasons scientists know that the universe is rapidly expanding is because the light from distant galaxies is Red Shifted, meaning that the galaxies are moving away from us. However, there are some galaxies moving toward us instead. These galaxies have their light Blue Shifted by the Doppler Effect instead. What do we know about Red and Blue light waves because of this?

Which statement best defines specific heat? The amount of heat required to increase the temperature of 1 mol of a substance by 1°C. The amount of heat required to increase the temperature of a specific object, such as a calorimeter, by 1°C. The amount of heat required to increase the temperature of 1 L of a substance by 1°C. The amount of heat required to increase the temperature of 1 g of a substance by 1°C.

A force is increased to a level having a mass of 25.0 kg, including supplies. This force must exert a force exceeding 1170 N at an angle of 34.3° (above the horizontal) in order to get the sled moving. Find: a) Calculate the normal force (in N) on the sled while the magnitude of the applied force is 1170 N. b) Find the coefficient of static friction between the sled and the ground beneath it. c) Calculate the normal force (in N) on the sled when the magnitude of the applied force is 5.65 × 10² N on the sled at the same angle.

Using the wide-angle, fine water spray setting is most effective in areas.

Consider the following angle. 45° (a) Draw the angle in standard position.

The wind changed and made the boat tip to the side. What does Sean do to make sure the boat does not tip over? (A) He moves to the other side of the boat. (B) He lets some air out of the sail. (C) He lets go of the steering wheel. (D) He asks his father for help.

n = (P V) / (R T) * (1.017 atm)(1.0^2 c) / (0.0221 atm/m.k)(3461 t) = 1.03734

Which term refers to the period of time after a nerve cell has responded to a stimulus in which it cannot be excited by a threshold stimulus? Inhibitory period Refractory period Latent period Excitatory period

To celebrate a victory, a pitcher throws her glove straight upward with an initial speed of 6.5 m / s. (a) How much time does it take for the glove to return to the pitcher? (b) How much time does it take for the glove to reach its maximum height?

If you happened to be laying on a train that had a velocity of 10 m / s when you tossed the ball straight up, how far would the train have moved while the ball was in the air?

What can we prove to be true using the reflexive property for this diagram? angle DAE congruent to angle BAC AE congruent to AD angle ADE congruent to angle AED angle CBA congruent to angle BCA

Find the solution of the differential equation [ y''-3y'+2y=(3-4x)e^3x ] satisfying the initial conditions (y(0)=frac32) and (y'(0)=frac92). Show your working.

Question 66 Draw a phasor diagram for a three-phase star connected four-wire system to determine the neutral conductor current for the listed phase currents. - A phase to neutral, 12 amperes purely resistive. - B phase to neutral, 20 amperes lagging phase voltage by pf 0.8 . - C phase to neutral, 20 amperes at unity power factor.

If a barometer reads 530.7 mm Hg , what is the atmospheric pressure expressed in centimeters of mercury?

Below is the graph of y=sqrt(x). Transform it to make it the graph of y=-sqrt(x+3)-1.

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