Physics Homework Questions & Answers Archive

A local FM radio station broadcasts at a frequency of 89.8 MHz .(1 MHz=10^6 s^-1) Calculate the energy of the frequency at which it is broadcasting. Energy = kJ

In this experiment, when load was increased to 2 kg, the muscle was not able to lift the weight at all. If the experiment had allowed you to increase the stimulation voltage above 8.5 V, do you think a higher voltage would have allowed the same muscle to lift the 2 kg weight? Please thoroughly explain your answer in detail. (1 pt)

A ball of mass m=0.1 kg is thrown horizontally with an initial velocity Vinitial=10.0 m / s towards a wall. The ball bounces off the wall and comes back with a final, horizontal velocity Vfinal=-8.0 m / s. The contact between the ball and the wall lasts for a time Δt=0.8 ms (milliseconds). What is the magnitude of the force applied by the wall on the ball? Round off your answer to 0 decimal places. Do not forget the units.

Complete the hypothesis test with the alternative hypothesis μd>0 based on the paired data that follow and d=B-A. Use α=0.05. Assume normality. A 700 830 860 1080 930 B 720 820 890 1100 960 B: Solve using the evalue approach. n= , 𝑑̅=20 x, 5 d=10 Hypothesis Test: H0: μd=0 vs. Ha: μd>0 Solve for t. t =4.47 Use t to find the p-value. p-value: 0.0025 Decision for the p-value Approach: Reject H0, p-value < α Find t(df, a). t(df, a)=2.353 Decision for the Classical Approach: Reject H0, t >t(df, a)

A student lifts a 2.4-kg physics book to a height of 38 cm and then puts it down to its original position. Assume that the speed of the book remains constant during the entire process. The work done by the student while lifting the book up, w1= Units Select an answer. The work done by the gravity force while lifting the book up, w2= Units Select an answer. The work done by the student while putting the book down, w3= Units Select an answer. The work done by the gravity force while putting the book down, w4= Units Select an answer. If the book is lifted up in 1.2 seconds, how much power was developed by the student? P= Units Select an answer.

Researchers measured skulls from different time periods in an attempt to determine whether interbreeding of cultures occurred. Results are given below. Assume that both samples are Independent simple random samples from populations having normal distributions. Use a 0.05 significance level to test the claim that the variation of maximal skull breadths in 4000 B.C. is the same as the variation in A.D. 150. n 131.92 mm 5.15 mm 4000 B.C. 30 A.D. 150 30 136.88 mm 5.39 mm What are the null and alternative hypotheses? A. H0: σ1^2=σ2^2 B. H0: σ1^2=σ2^2 H1: σ1^2<σ2^2 H1: σ1^2 ≠ σ2^2 C. H0: σ1^2 ≠ σ2^2 D. H0: σ1^2=σ2^2 H1: σ1^2=σ2^2 H1: σ1^2 ≥ σ2^2 Identify the test statistic. F= (Round to two decimal places as needed.)

Why do high winds pose a particular airborne hazard around surface mines? • Layer of loose soil at mine sites • High altitudes at mine sites • Extreme temperatures at mine sites • Proximity to hurricane zones

Vector A, of magnitude 360.5 and direction θ=212.23°, has x - and y-components -305.0 and -192.3. See the figure to the right. Change 212.23° to 180.00° and find the components of the vector. The horizontal component is (Round to one decimal place as needed.)

Quiz 11 - Chapter 5 Chapter 5 Question 20 - Multiple Choice Part A The units of specific heat are J / mol g-K / J or g · °C / J K / J or °C / J J / K or J / °C J / g-K or J / g°C

Frequency of failure and network recovery time after a failure are measures of the of a network. A performance B reliability C security D feasibility

Find standard notation, a+bi. 18(cos(150°)+i sin(150°))

combines all the promotional tools employed by a firm into one comprehensive and unified promotional strategy. A market unification plan Integrated marketing communication A push promotional program A target coordination program

The magnitudes of vectors u and v and the angle θ between the vectors are given. Find the sum of u+v. u=13, v=13, θ=110° The magnitude of u+v is . (Round to the nearest tenth as needed.) The resultant vector u+v makes an angle of ° with u (Round to the nearest degree as needed.)

Find the sum of the vectors A and B shown in the figure.

Find the symmetries of the graph of r=4(1-sin theta).

Consider the following graph: This graph... contains neither an Euler Circuit nor a Hamilton Cycle contains a Hamilton Cycle but not an Euler Circuit contains an Euler Circuit but not a Hamilton Cycle contains an Euler Circuit and a Hamilton Cycle

Question 4 (1 point) Match each star with the approximate spectral class: The strongest lines are those of ionized helium. The strongest lines are those of neutral metals and 1. A bands of titanium oxide. Lines of ionized calcium are 2. O the strongest in the spectrum; hydrogen lines 3. G show only moderate Balmer lines of hydrogen 4. M are very strong; some lines of ionized metals are present.

Sekil 1: Kompozit đuvarların ses yalitımı açısından değerlendirilmesi Grafigin kullanımı: 1. "Ropak duar - R pencere" değeri grafigin yatay ekseninde işaretlenir. 2. "Açıklığın tüm alandaki %'si' eğrisi belirlenir. 3. Yatay eksendeki = "Ropak auw - R pencere" degerinden yukan dik bir çizgi çizilerek "Açıklığın tüm alandaki %'si" egrisi ile çakıştırılır. 4. Çakışan noktadan yatay bir çizgi çizilerek ( X ) değeri duşey eksenden okunur. Tablo 5: Ses azaltım indisinin hesaplanması için kullanılabilecek örnek tablo 125 Hz 500 Hz 2000Hz L1 (Tablo 1) L*viter (Tablo 2) Ritanen Açıklığın tüm alandaki %si Ropak diven (Tablo 4) Rpencore (Tablo 3) Ropak dive - Rpencere (X) (Şekil 1) Rkempoath ( Ropak divar - X ) Rkompont >= Rst TESLİM PAFTASINDA İSTENENLER Yapılan çalışma sonucunda kısa bir rapor yazılmalı, hesap tablosu eklenmeli ve seçilen duvar-pencere sistemine ait kesit 1 / 5 ölçeğinde çizilmelidir.

Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the magnetic field has a magnitude of 1.69 T, the rod has a length of 0.946 m, and the hand keeps the rod moving to the right at a constant speed of 4.18 m / s. If the current in the circuit is 0.0451 A, what is the average power being delivered to the circuit by the hand?

One end of a light inextensible string is attached to a tool box of mass 2.5 kg which is lying on a horizontal table. The string passes over a smooth pulley and is tied at the other end to a bag of mass 1.4 kg. a Draw a diagram showing the forces acting on the tool box. b If the tool box is just on the point of sliding, find a value for μ, the coefficient of friction.

Weights of golden retriever dogs are normally distributed. Samples of weights of golden retriever dogs, each of size n=15, are randomly collected and the sample means are found. Is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? Explain. Choose the correct answer below. A. Yes; the sample size must be over 30 for the sample means to be normally distributed. B. No; as long as more than 30 samples are collected, the sample means will be normally distributed. C. No; the samples are collected randomly, so the sample means will be normally distributed for any sample size. D. No; the original population is normally distributed, so the sample means will be normally distributed for any sample size.

Graph the solution to the following system of inequalities. y < -5x + 2 y > 2x - 9

Question 1 A wire of length L is fixed at both ends. Which of the options below represents the stationary wave with the longest wavelength that can be established in this wire?

Consider the following statement about a correlation. State the correlation clearly (for example, there is a positive correlation between variable A and variable B). Then state whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause. Explain your answer. When gasoline prices rise, sales of sport utility vehicles decline. There is a correlation between gasoline prices and sport utility vehicle sales. Determine the possible explanation for the correlation. Choose the correct answer below. A. This correlation is due to a possible direct cause because there is no link between gas prices and sales of sport utility vehicles. B. This correlation is due to a common underlying cause because sport utility vehicles require more gasoline than a smaller type of vehicle. C. This correlation is due to coincidence because there is no link between gas prices and sales of sport utility vehicles. D. This correlation is due to a possible direct cause because sport utility vehicles require more gasoline than a smaller type of vehicle. E. This correlation is due to a common underlying cause because the price of gas increases the purchase price of only sports utility vehicles. F. There is no correlation because there is no link between gas prices and sales of sport utility vehicles.

Find the slope of the line shown on the graph to the right. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The slope of the line is 1. (Simplify your answer. Type an integer or a fraction.) B. The slope is undefined.

The following function is graphed in a window such that hidden behavior is not evident. Find an appropriate viewing window and locate the extreme points on the graph of the function. y = (1/3) x^3 - (5/2) x^2 + 6x - 6 Determine an appropriate window for the following graph. A. [-10,10] by [-10,10] B. [0,5] by [-20,20] C. [0,6] by [0,6] D. [0,5] by [-2,0]

Question 7 If all three pots have the same amount of water, which will boil first? A B C All would boil at the same time.

Consider the following matrix. A= [ [ -4 -6 ] [ 2 3 ] ] Choose the correct description of A. Find A^-1 if it exists. A is nonsingular. That is, it has an inverse. A^-1= A is singular. That is, its inverse doesn't exist.

Elección múltiple 5 puntos El rango de frecuencias de interés en la exposición a vibraciones del cuerpo completo es: 20[Hz] a 20[kHz]. 1[Hz] a 1500[Hz]. 1[Hz] a 80[Hz]. 5[Hz] a 80[Hz].

Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5 minutes. Battery Initial temperature (°C) Final temperature (°C) -------------------------------------------------------------------------------------------- Battery in the less expensive phone 37 22 Battery in the more expensive phone 37 25 During this time, thermal energy was transferred from each battery to the surroundings.

Points: 0.8 of 1 Save The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 3 hours without oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor oil, ran the engines, drained the oil, and then determined the time until the engines seized. Complete parts (a) and (b) below. (a) Determine the null and alternative hypotheses that the magazine will test.

A person is given an injection of 700 milligrams of penicillin at time t=0. Let f(t) be the amount (in milligrams) of penicillin present in the person's bloodstream t hours after the injection. Then, the amount of penicillin decays exponentially, and a typical formula is f(t)=700 e^(-0.8 t). Complete parts (a) through (c) below. (a) Give the differential equation satisfied by f(t). f'(t)=

(c) What is the probability that a random sample of 23 time intervals between eruptions has a mean longer than 94 minutes? The probability that the mean of a random sample of 23 time intervals is more than 94 minutes is approximately (Round to four decimal places as needed.)

The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 41 N·m. You plan to tighten the plugs by pulling on the end of a 24-cm-long wrench. Because of the cramped space under the hood, you'll need to pull at an angle of 110° with respect to the wrench shaft. With what force must you pull? Express your answer in newtons.

Ben and Jose went on a road trip. The graph below gives the rate at which their car traveled. At what speed did the car travel? 60 mph 70 mph 65 mph 55 mph

Question 13 6.67 pts In the diagram below, helium atoms are represented by unshaded spheres, neon atoms by gray spheres, and argon atoms by black spheres. If the total pressure in the container is 900 mm Hg , what is the partial pressure of helium? 450 mm Hg 270 mm Hg 90 mm Hg 180 mm Hg

An object is moving with velocity (in ft / sec) v(t) = t^2 - 5t + 4. At t=0, the object has a position of s=8 feet. Use antiderivatives to find the position equation. s(t) = The position of the object at 6 seconds is feet.

What is the standard deviation of the sample means called? What is the formula for this standard deviation? The standard error of the mean: σ/√n

Ordering Question Click and drag on elements in order. Arrange the change in gravitational potential energy with the largest change in gravitational potential energy at the top and the smallest at the bottom. The mass of the object is the same in each case. Instructions An object moves from sea level to the top of a large mountain. An object moves from sea level to 5 m above sea level. An object moves horizontally. Need help? Review these concept resources. Read About the Concept Rate your confidence to submit your answer: High Medium Low Reading © 2024 McGraw Hill. All Rights Reserved. Privacy Center Terms of Use

What is the successor to the Hubble Space Telescope in the mid-IR-to-visible band? a) Nancy Grace Roman Space Telescope b) Euclid Space Telescope c) PLATO Space Telescope d) James Webb Space Telescope Which space agency partnered with NASA on the Hubble Space Telescope project? a) JAXA b) ESA c) CSA d) Roscosmos

To make a bounce pass, a player throws a 0.50-kg basketball toward the floor. The ball hits the floor with a speed of 5.0 m/s at an angle of 65° to the vertical. If the ball M=0.5 vi=5 θ=65° rebounds with the same speed and angle, what was the impulse delivered to it by the floor? (Hint: Consider x and y components of the velocity before and after the impact with the floor)

In tests of a computer component, it is found that the mean time between failures is 610 hours. A modification is made which is supposed to increase reliability by increasing the time between failures. Tests on a sample of 43 modified components produce a mean time between failures of 631 hours, with a standard deviation of 52 hours. Test the claim that on average, the modified components last longer than 610 hours between failures, use a level of significance of 1%. a. What type of test will be used in this problem? b. What evidence justifies the use of this test? Check all that apply: - The population standard deviation is known - The original population is approximately normal - There are two different samples being compared - The sample standard deviation is not known - n p>5 and n q>5 - The sample size is larger than 30 - The population standard deviation is not known c. Enter the null hypothesis for this test. H0: ? v ? d. Enter the alternative hypothesis for this test. H1: ? v ? e. Is the original claim located in the null or alternative hypothesis?

Jack screws are used for machine movement only True False

a. What factor is different in diagrams A and B? What factor is the same? b. Which object will have the greater acceleration? Why?

A reaction between liquid reactants takes place at 28.0°C in a sealed, evacuated vessel with a measured volume of 10.0 L. Measurements show that the reaction produced 6.0 g of carbon dioxide gas. Calculate the pressure of carbon dioxide gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Round your answer to 2 significant digits.

A meter-out flow control circuit is used to control aiding loads, builds back pressure at the actuator, is used to control opposing loads, all of the above.

Give the component form of a vector that maps ΔJKL to ΔJ'K'L', J(-5,2), K(-1,-3), L(1,5) J'(-3,-1), K'(1,-6), L'(3,2) J(3,6), K(4,-1), L, , 2,2 J'(6,7), K'(7,0), L'(3,3)

5. Several students are discussing how they could use what they know about compasses and magnetic fields to test whether an electric current can cause a magnetic field. Select which students' investigation would provide evidence that an electric current through a wire can cause a magnetic field. Student 1: I think we should attach a wire to a current meter, then bring a magnet near the wire. If there is a current in the wire, that means that a current can cause a magnetic field. Student 2:1 think we should place a compass near some wire. Then we can attach the wire to a battery. If the compass deflects when the wire is connected to the battery, then there must be a magnetic field. Student 3: I agree we should place a compass near some wire, but why do we need the battery? If the compass deflects when it is near the wire, there must be a magnetic field caused by the current.

2.4.2 Quiz: Civil Engineering Question 6 of 10 Which of the following best describes why a cruise ship floats? A. Its volume and mass are equal. B. It displaces more than half of its weight in water. C. Its volume is greater than its mass. D. It displaces an equal or greater amount of water than its own weight.

On a particular day, a restaurant that is open for lunch and dinner had 179 customers. Each customer came in for one meal. An employee recorded at which meal each customer came in and whether the customer ordered dessert. The data are summarized in the table below. Dessert No dessert ----------------------------- Lunch 11 29 Dinner 45 94 Suppose a customer from that day is chosen at random. Answer each part. Do not round intermediate computations, and round your answers to the nearest hundredth. (If necessary, consult a list of formulas.) (a) What is the probability that the customer came for dinner? (b) What is the probability that the customer came for dinner or ordered dessert?

A thin sample of X is put between metal plates. A radio-frequency electric current is applied to the plates and passes through the sample. From the measured voltage across the plates the value of E may be calculated.

Determine the change in gravitational potential energy of the book:

A wooden float at the end of a fishing line makes eight complete oscillations in 10 s . If it takes 3.60 s for a single wave to travel 11 m , what is the wavelength of the water waves? (A) 4.82 m (B) 5.82 m (C) 3.82 m

Organic reactions. The following reaction describes what process: CH4(g) + 2 O2(g) = CO2(g) + 2 H2O A. combustion of petroleum B. combustion of natural gas C. respiration D. greenhouse warming

The solution to Schrodinger's wave equation for a particular situation is given by Ψ(x) = √(2/a) e^(-x/a0). Determine the probability of finding the particle between the following limits: (a) 0 ≤ x ≤ a0/4, (b) a0/4 ≤ x ≤ a0/2, (c) 0 ≤ x ≤ a0. Therefore (b) P = ∫ from (ao / 4) to (ao / 2) [(√(2/ao) exp (-x/ao))^2] dx = (2/ao) ∫ from (ao / 4) to (ao / 2) exp (-2x/ao) dx = (2/ao)((-ao)/2) exp (-2x/ao) from ao / 2 to ao / 4 or P = (-1)[exp (-1) - exp (-1/2)] which yields P = 0.239

If you already know aN and v, then the formula aN = κv^2 gives a convenient way to find the curvature. Use it to find the curvature and radius of curvature of the curve r(t) = (cos t + t sin t) i + (sin t - t cos t) j, t>0. The curvature is

Find the slope of the line shown on the graph to the right. Select the correct choice below and, if necessary, fill in the answer box within your choice. A. The slope of the line is (Simplify your answer. Type an integer or a fraction.) B. The slope is undefined.

For the spinner below, assume that the pointer can never lie on a border line. Find the following probabilities: (Enter the probabilities as fractions.) (a) P(D) (b) P(E) (c) P(F)

In practice, a good insulator slows heat flow. stops heat flow. speeds negative heat flow. all of the above

At 3:00 PM a man 137 cm tall casts a shadow 130 cm long. At the same time, a tall building nearby casts a shadow 177 m long. How tall is the building?

Question 15 1 pts Both sound and light can travel in water. a vacuum. both of these none of the above

Multiple Choice Question In response to increased osmotic pressure, the pituitary gland releases which signals the kidneys to retain water, thus reducing urine output. O angiotensin O antidiuretic hormone O renin O aldosterone Need help? Review these concept resources.

Consider the following three distributions. (a) (b) (c) Of the two normal distributions, which has the larger standard deviation?

Arrange these three colors of visible light - green, red, and blue - in order of increasing energy per photon.

An iron casting containing a number of cavities weighs 6.75 E+3 N in air and 4.18 E+3 N in water. What is the total volume of all the cavities in the casting? The density of iron (that is, a sample with no cavities) is 7.87 g / cm^3.

Make the following conversion. Round to 2 decimal places, if necessary. 8 m to yards

U Y ≅ U W. Complete the proof that W Z ≅ V Y. - Statement - Reason 1. ∠W ≅ ∠Y - 2. U Y ≅ U W - 3. ∠U ≅ ∠U - 4. ΔUWY ≅ ΔUZW - 5. W Z ≅ W Y -

Plot the point (1, 5π/6), given in polar coordinates, and find other polar coordinates (r, θ) of the point for which the following are true. (a) r>0, -2π ≤ θ<0 (b) r<0, 0 ≤ θ<2π (c) r>0, 2π ≤ θ<4π

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 710 nm. 4.10 x 10^14 s^-1 5.05 x 10^14 s^-1 4.26 x 10^14 s^-1 2.30 x 10^14 s^-1 3.40 x 10^14 s^-1

Laboratory 10: Endocrine System Question Part A Which gland is highlighted? - infundibulum - pineal gland - pituitary gland - hypothalamus

Solve the following equation for all solutions in the interval [0,2 π) 4 sin ^2(x)-3=0 π/3, 2 π/3, 4 π/3, 5 π/3 2 π/3, 4 π/3 π/3 π/3, 5 π/3 Solve the following equation for all solutions (not just ones on the interval [0,2 π )) 2 sin (2 x)-√3=0 π/3+2 π n, 5 π/6+2 π n π/6+2 π n, 5 π/6+2 π n π/3+π n, 5 π/3+π n π/6+π n, π/3+π n

Which cloud type is likely to be found along a cold front? cumulonimbus cirrus cirrostratus nimbostratus If a hurricane is particularly violent what happens to the name on the World Meteorological Organization's rotating name list? it is removed the name appears in bold the name appears in red the name becomes entirely capitalized

Determine whether the integral ∫ from 1 to ∞ of x e^(-x) dx is convergent or divergent. Evaluate it if it is con-

A 6.3 kg statue is sitting on an incline plane at a 70.0° angle. Draw a force diagram. Label all the forces. Find the holding force and normal of the block.

Find an equation for the graphed function below by using transformations of the graph of a toolkit function.

A. Is the slope of the graph constant? B. What is the slope (m)? C. What is the y-intercept (b)? D. Write an equation for the line. (y=mx+b)

What happens when a wire is moved between the poles of a magnet? wer the following View Available Hint(s) Nothing happens. The wire becomes magnetized. A voltage is generated in the wire. Submit

Which object has the most gravitational potential energy? Select the correct answer below: an airplane in mid-flight a baseball held by a pitcher a bird on top of a flagpole these objects all have the same gravitational potential energy

A Gaussian cylinder is drawn around some hidden charges, as shown in the figure below. Part 1 Given this pattern of electric field on the surface of the cylinder, how much net charge is inside? - The quantity cannot be measured, but the net charge is negative; there is twice the amount of negative charge inside as positive charge. - The quantity cannot be measured, but the net charge is positive; there is twice the amount of positive charge inside as negative charge. - The net charge is zero. Save for Later Attempts: 0 of 6 used Submit Answer Using multiple attempts will impact your score. 40% score reduction after attempt 3 Part 2 Invent a possible charge distribution inside the cylinder that could give this pattern of electric field. - a point charge - a uniformly charged ring, which shares a central axis with the cylinder - a dipole, with the positive charge on the left end of the cylinder - a dipole, with the positive charge on the right end of the cylinder - a uniformly charged rod

B) 4 rho C) rho / 2 D) rho FOR 11 - 15, SHOW ALL WORK, INCLUDING ALL EQUATIONS. Each question worth 10 points each. Moments of inertia: Cylinder: I=1 / 2 mr^2 Sphere: (2/5) mr^2 Rod: (1/12) mL^2 (this L is length) FALL 2022 14. A cubical box 25.0 cm on each side is immersed in a fluid. The pressure at the top surface of the box is 109.4 x 10^3 N / m^2 and the pressure on the bottom surface is 112.0 x 10^3 N / m^2. What is the density of the fluid? FALL 2022

Write equations for the vertical and horizontal lines passing through the point (-9,5). vertical line: horizontal line:

How does the thought experiment involving the freely falling lift challenge traditional notions of "absolute" motion? t shows that the observer inside the lift experiences weightlessness, proving that gravity is not an absolute force. It demonstrates that all objects fall at the same rate, regardless of their mass, proving that the effects of gravity are relative. It shows that the effects of acceleration can be indistinguishable from the effects of gravity, suggesting that non-uniform motion is not absolute. It proves that the laws of physics are the same inside and outside the lift, validating the principle of relativity.

Begin by graphing (g(x)=ln x) Use transformations of this graph to graph the given function. Graph and give the equation of the asymptote. Use the graphs to determine the function's domain and range. [g(x)=ln (x+6)] Graph (g(x)=ln (x+6)). Graph the asymptote of (g(x)) as a dashed line. Use the graphing tool to graph the function. What is the vertical asymptote of (g(x)) ? (Type an equation) What is the domain of (g(x)=ln (x+6)) ? (Simplify your answer. Type your answer in interval notation.) What is the range of (g(x)=ln (x+6)) ? (Simplify your answer. Type your answer in interval notation.)

Use Bernoulli's equation to estimate the upward force on an airplane's wing if the average flow speed of air is 190 m / s above the wing and 160 m / s below the wing. The density of the air is 1.29 kg / m^3, and the area of each wing surface is 31.3 m^2.

Problem 09.084 - Average speed of blood flow The average speed of blood in the aorta is 0.344 m / s, and the radius of the aorta is 1.00 cm . There are about 2.00 x 10^9 capillaries with an average radius of 6.50 μm. What is the approximate average speed of the blood flow in the capillaries? mm / s

The angle at the vertex is π / 3, and the top is flat and at a height of 7√3. Write the limits of integration for ∫W d V in the following coordinates (do not reduce the domain of integration by taking advantage of symmetry): (a) Cartesian: With a=-21, b=21 c=-21, d=21 e=0, and f=7√3 Volume =∫a^b ∫c^d ∫e^f d square d square

What degrees of freedom should you use, when calculating the critical value? 224 1 226 225

A Newton equals kg m/s^2

When constructing a simple pendulum, the length of the pendulum is measured from the attachment point to the bottom of the pendulum bob. True False

Does changing the mass change the amount of total energy? Why or why not?

If more than one variable was being manipulated and others were not being held constant, explain what gas law equation would need to be used to determine the other values.

Solve the right triangle. Find the length of the side opposite to the given angle. (Round your answer to two decimal places.) Find the length of the side adjacent to the given angle. (Round your answer to two decimal places.) 35.57 Find the other acute angle. 3π/8 rad

Consider the diagram. The congruence theorem that can be used to prove triangle MNP congruent to triangle ABC is - SSS. - ASA. - SAS.

Fancy Footwear manufactures shoes. Figure 11-3 shows Fancy Footwear's marginal product of labor and average product of labor curves in the short run. Refer to Figure 11-3. For what quantity of labor does production start to display diminishing returns? for more than 5 units of labor for more than 4 units of labor for more than 8 units of labor for more than 1 units of labor

When the angle of elevation of the sun is 68°, a telephone pole that is tilted at an angle of 8° directly away from the sun casts a shadow 24 feet long. Determine the length of the pole to the nearest foot. The length of the pole is ft (Type an integer.)

Write the coordinates of the vertices after a rotation 180° clockwise around the origin.

Use the drop-down menus to explain if the two figures below are congruent, similar, or neither. If the figures are similar, state the scale factor.

The functions in pumping blood throughout the body, while the functions in filtering the blood.

Score: 11/19 Answered: 11/19 Question 12 Find the area of the shaded region under the standard normal distribution to the right of the given z-score. Round your answer to four decimal places. P(z>-1.19)=

Find the volume of the figure. H=20 m 6m 8 m The volume of the figure is (Round to the nearest whole number as needed.)

A plane flying horizontally at an altitude of 3 miles and a speed of 540 mi / h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it has a total distance of 4 miles away from the station. (Round your answer to the nearest whole number.) mi / h

Determine the amplitude, period, any vertical translation, and any phase shift of the given graph. y=4 cos (x/5-pi/5)

Data Table 3: Changing the Drag Coefficient of a Projectile Drag Coefficient (m) Flight Time (s) Flight Range (m) Maximum Height (m) Initial Drag Force (N) --------------- 0.15 1.9 s 19.37 m 2.07 m 0.30 1.9 s 18.62 m 1.73 m 0.45 1.9 s 17.95 m 1.41 m 0.60 1.8 s 16.54 m 1.92 m 0.75 1.8 s 16.07 m 1.65 m

Find the horizontal asymptote, if any, of the graph of the rational function. f(x) = 10x / (6x^2 + 1) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The horizontal asymptote is . (Type an equation.) B. There is no horizontal asymptote.

Harmonics are multiples of the transducer frequency. True False Another name for volume flow rate; units are volume divided by time i.e. liters/minute. Flow Hematocrit Stenosis Viscosity

A buoy oscillates in simple harmonic motion as waves go past. The buoy moves a total of 2.5 feet from its low point to its high point (see figure), and it returns to its high point every 16 seconds. Write an equation that describes the motion of the buoy if its high point is at t=0, in terms of its height h.

As a public relations tool, involves disseminating unpaid news items through some form of media to gain attention and support.

Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance α, and sample sizes n1 and n2. Assume that the samples are random and independent and the populations are normally distributed. Complete parts (a) and (b). Ha: μ1 ≠ μ2, α=0.02, n1=15, n2=8 (a) Find the critical value(s) assuming that the population variances are equal. (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)

The vibrations of a longitudinal wave move in a direction opposite to wave travel.

A mass suspended from a spring bobs up and down one complete cycle every 2 s . Its period is 1 s. 2 s 0.5 s none of the above

In image representation, high resolution means a. larger file size and high bandwidth to transfer the file. b. lower image quality. c. larger file size and less bandwidth to transfer the file. d. smaller file size and less bandwidth to transfer the file.

True or False 1 point The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement.

Rank the objects below in terms of atmospheric thickness starting with the thinnest/smallest/non-existent as number "1" and the thickest as number "4." Earth Mercury Venus Mars

Question 1 (1 point) Listen What evidence do we have that Jupiter is continuing to contract under the influence of its own gravity? Jupiter radiates more energy than it receives from the Sun. Jupiter's magnetic field is getting stronger as the planet contracts. Jupiter is fatter at its equator than around its poles. Jupiter's radius has measurably shrunk since it was first observed in a telescope. View hint for Question 1

Oil is leaking out of a ruptured tanker at the rate of r(t)=20 e^(-0.04 t) thousand liters per minute. A. At what rate, in thousands of liters per minute, is the oil leaking out at t=0 ? rate =20 thousand liters / min at t=60 ? rate = thousand liters/min B. How many thousands of liters leak out during the first hour? Number of liters = thousand liters

In Compton Scattering, the fate of the photon is best described by which of the following: Some of the energy of the photon is transferred and it continues in a different direction with less energy All the energy is transferred to the electron, the photon no longer exists All of the energy is absorbed by the nucleus, then subatomic particle(s) are emitted All of the energy of the photon is absorbed and converted to matter

Step 3 Find ω using the formula to find the period of the curve. period = (2 π) / ω Substitute the value of period and solve for ω, simplifying fractions. Your answer cannot be understood or graded. More Information = (2 π) / ω ⇒ ω = π / square Therefore, the model for simple harmonic motion is d = square

Given the graph of the function f(x) shown below, find the average rate of change of the function f(x) on the interval [5, 15].

With what part of the scapula does the humerus articulate? subscapular fossa glenoid cavity supraspinous fossa scapular spine Submit Request Answer

Problem 10. (10 points) Show F(x, y)=(2 x y^3+5) i+(3 x^2 y^2+2 e^(2 y)) j is conservative by finding a potential function f for F, and use f to compute ∫C F · d s, where C is the curve given by r(t)=2 sin^3 t i+(2 t/π) sin^12 5t j for 0 ≤ t ≤ π / 2. f(x, y)= ∫C F · d s=

Sketch the graph of (y=csc x), and then identify as many of the following properties that apply. Answer (a) through (e). (a) Is the function an odd function? yes no (b) Does the function obtain a relative maximum at (x=pi n) where n is an odd integer? yes no (c) Is the domain all real numbers except integer multiples of (pi)? no yes (d) Are the equations of the vertical asymptotes of the form (x=n pi) where (n) is an integer? no yes (e) Does the function have a period of (P=pi)? yes

A precast concrete wall section is temporarily held by two cables, as shown. Knowing that the tension in cable BD is 900 N , determine the moment about point O of the force exerted by the cable B. No need to carry out the calculations - Just set up the moment equation based on force and position vectors.

Multiply. -6 i(-5+5 i) Write your answer as a complex number in standard

Consider the following. The double integral of xy dA, where D is enclosed by the quarter-circle y = sqrt(25-x^2), x >= 0, and the axes Rewrite the above as an iterated integral. The integral from 0 to sqrt(25-x^2) of xy dy dx Evaluate the double integral.

Ballistic Pendulum: Conservation of Linear Momentum Conservation of Mechanical Energy Laboratory Report A. The Ballistic Pendulum. Purpose: To determine the muzzle velocity (vo) of projectile from toy gun. Mass of projectile, (m) kg Mass of pendulum, M .2454 kg Length of pendulum, L .3 m Calculate height, h(Eq. 9) 02223 .78 Calculate (vo) (Eq. 8) (m / s) B. The Ballistic Pendulum vs. Projectile Motion. Purpose: Compare the muzzle velocity (v0) of projectile from toy gun using both methods. % difference 59.35

For a hypothesis test: Null hypothesis: μ=300 Alternative hypothesis: μ ≠ 300 The sample standard deviation, 5=25. Which type of distribution would you use to get the test statistic and p-value? Uniform Distribution Student t-distribution Binomial Distribution Normal Distribution

Diffusion of gas The direction of the diffusion of gas is determined by Multiple Choice temperature. movement of blood. levels of cholesterol. partial pressure differences. pH .

Consider the function g, which is a one-to-one function with values g(9)=-4 and g(-2)=-1. Which of the following must be true? Select all correct answers. Select all that apply: g^(-1)(-1)=9 g^(-1)(-2)=1 g^(-1)(9)=4 g^(-1)(-1)=-2

BCSA1006 - INTRODUCCIÓN A LA FÍSICA Prueba Solemne 01 Pregunta 02 (08 pts.): Considere que un objeto se mueve horizontalmente sobre el eje- x, cuya posición inicial es x₀=47 m. Además, dicho objeto tiene una velocidad inicial de v₀=11 m / s y una aceleración constante de a=-2.0 m / s². a) (2 pts.) Escriba las ecuaciones de itinerario x(t) y v(t). b) (3 pts.) ¿Cuánto tiempo tarda el objeto en llegar a 55 m ? c) (3 pts.) ¿En que instante el objeto se encuentra en reposo? Indicación: Considere el uso de cifras significativas.

Which tube represents the gas after the sample is heated at constant pressure?

Question 21 Which of the following terms refers to Congress formally setting aside money for a specific use? • allocation • appropriation • authorization measure • fiscal measure Next > Not saved Submit Quiz

If these paths exist in a conservative vector field F, which vector line integrals will have the same value? Select two or more common integrals. Select all that apply: ∫C2 F · ds+∫C3 F · ds ∫C2 F · ds ∫C1 F · ds ∫C3 F · ds

A scientist is running a test of her hypothesis. Which step of the scientific method is she executing? Observation Experiment Conclusion Analysis

Which of the following is not a function for all values of x? f(x) = x^3 f(x) = (-x)^(1/2) f(x) = (-x)^(1/3) f(x) = 1 - x^(1/2) f(x) = 1 - x^(1/3)

Given the function (4 x^2 y^2+5 x y=26) : a. Differentiate implicitly with respect to (x). Your answer should be the first line in the implicit differentiation process. Do not simplify or factor terms. b. Find the slope of the line tangent to the graph of the function at the point ((2,1)). c. Find the equation of the tangent line at the point ((2,1)) in the form (y=mx+b). [ y= ]

Consider the circuit shown, where V1=1.8 V, V2=2.40 V, R1=1.7 k Ohm, R2=1.6 k Ohm, and R3=1.5 k Ohm. - Part (a) What is the current through resistor R1 in milliamperes? I1=0.8750 mA Part (b) What is the current through resistor R2 in milliamperes? I2= square mA

Flying against the wind, a jet travels 1710 miles in 3 hours. Flying with the wind, the same jet travels 1820 miles in 3 hours. What is the rate of the jet in still air? Rate of the wind: Rate of the jet in still air:

Answer the following question in as much detail as possible. The figure above represents a method for raising the water from the pond up to the water tower, at a higher level, without using a pump. Water is allowed into the drive pipe, and once it is flowing fast enough, it forces the valve at the bottom closed. Explain how this works in terms of conservation of mass and energy.

A child is on a playground they start to slide down a large slide. At what point is the child in dynamic equilibrium with the slide? (1 point) When the child pushes themselves down the slides. As the child is in motion as they are sliding down. When the slide ends and the child has stopped moving. The child will not reach dynamic equilibrium.

3. II How close to the right edge of the 56 kg picnic table shown in Figure P8.3 can a 70 kg man stand without the table tipping over? Hint: When the table is just about to tip, what is the force of the ground on the table's left leg? FIGURE P8.3

Write the function whose graph is the graph of y=sqrt(x), but is translated 7 units downward.

Find the area under the standard normal curve to the right of z=1. A. 0.1587 B. 0.8413 C. 0.1397 D. 0.5398

Tell whether the transformation appears to be a rigid motion. Explain.

The figure below shows y=3 sin(5x) and y=3 sin(10x). Which graph is y=3 sin(5x) ? Choose one △ Identify the values labeled a to e in the figure. NOTE: Enter exact values or round to three decimal places. a= □ d= □ b= □ e= □ c= □

The speed v (λ/10 m/sec) of an ocean wave in deep water is approximated by v(λ) = 4√λ, where λ (in meters) is the wavelength of the wave. (The wavelength is the distance between two consecutive wave crests.) Part: 0 / 4 Part 1 of 4 (a) Find the average rate of change in speed between waves that are between 1 m and 4 m in length. The average rate of change in speed between waves that are between 1 m and 4 m in length = □ m/sec per meter.

True or False: In the event your engine dies, it is impossible to turn the steering wheel.

What type of lines are typically used for elevation continuity between a front view and side view of a drawing? Dashed Phantom Fence Center

Centrifuges are commonly used in biological laboratories for the isolation and maintenance of cell preparations. Suppose a centrifuge rotates with constant angular acceleration. Describe the tangential acceleration component of one of the blood samples that is located near the rim of the centrifuge. Multiple Choice The tangential acceleration constantly changes with time. It is impossible to determine what happens to the tangential acceleration of the blood sample since its location with respect to the center of the centrifuge is not given. The tangential acceleration is zero. The tangential acceleration is constant.

A brick of mass 1.00 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 2.87 m away? Ignore friction. Note: Rather than using the kinematic equations described in the beginning of the term, use the law of conservation of energy. m / s

Use the Law of Sines or the Law of Cosines to solve each triangle. Round all angle measures to the nearest tenth of a degrees and side Given? SSS Use: Law of Cosines Triangle B= degrees C= degrees

2. A pelican flying along a horizontal path drops a fish from a height of 7.4 m . The fish travels 10.0 m horizontally before it hits the water below. What is the pelican's speed?

The figure is a graph of the normal force exerted by the floor on a woman making a vertical jump. At what speed does she leave the ground? Hint: The force of the floor is not the only force imparting an impulse to the woman. (See image below) Express your answer using three significant figures. The graph shows just the normal forces, the jump time is 0.3 s , The normal force's impulse is postive and the weight's impulse is negative.

The processor within your smartphone that enhances the call quality is called a digital processor. binary signal modulated demodulated

What are you drinking? Environmental Protection Agency standards require that the amount of lead in drinking water be less than 15 micrograms per liter. Ten samples of water from a particular source have the following concentrations, in units of micrograms per liter: 11.9, 14.4, 11.6, 14.5, 15.6, 8.7, 12.5, 8.6, 11.5, 17.5 (a) Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because the sample size is small (n ≤ 30). (b) Following is a dotplot of the data. Is it reasonable to assume that the population is approximately normal? (c) Assume that the population standard deviation is σ=4. Perform a hypothesis test at the α=0.10 level using the critical value method with the table to determine whether you can conclude that the mean concentration of lead meets the EPA standard. What do you conclude? State the null and alternate hypotheses.

What is the definition of heat? Thermal energy transferred from one object to another due to a temperature difference.

What is the energy in cal for 880.0 J ? 210.3 cal 0.00475 cal 3682 cal 3.682 cal 21.03 cal

What is occurring in the area between #2 and #3? Potassium ions are entering the axon and causing depolarization. Chemically gated sodium channels are open and sodium is diffusing into the axon. Repolarization of the axon due to sodium ions leaving the axon is occurring. An excitatory graded potential is occurring. Sodium ions are entering the axon and causing depolarization.

Choose the correct statement. The axes of a Hertzsprung-Russell (H-R) diagram are surface temperature on the horizontal axis and luminosity on the vertical axis. The axes of a Hertzsprung-Russell (H-R) diagram are interior temperature on the horizontal axis and mass on the vertical axis. The axes of a Hertzsprung-Russell (H-R) diagram are mass on the horizontal axis and stellar age on the vertical axis. The axes of a Hertzsprung-Russell (H-R) diagram are surface temperature on the horizontal axis and radius on the vertical axis. The axes of a Hertzsprung-Russell (H-R) diagram are mass on the horizontal axis and luminosity on the vertical axis.

A pool player located at X wants to shoot the white ball off the top cushion and hit the red ball dead center. He knows from physics that the white ball will come off a cushion at the same angle as that at which it hit the cushion. If the deflection angle, θ, is 47°, where on the top cushion should he hit the white ball? The white ball should hit the top cushion approximately from the top left comer. (Round to two decimal places as needed.)

Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. Round to four decimal places. A. -0.0344 B. 0.4656 C. 0.0344 D. 0.9656

9. The SI unit of the B field (Magnetic field) is called Tesla T. The B field is measured in nano-Tesla (1 nT=1 x 10^-9 T) on the NOAA website. In the App the units used are micro-Tesla and 1 micro-Tesla is equal to 1 x 10^-6 T. If you are in the USA, on average on the App you expect to see around 50 microTesla for the B total. 10. Using trigonometry, plus the values of B21 and By determine the inclination angle. The formula you want to use is the following: Inclination angle = inverse tangent (B z component / B y component) => θ = tan^-1 (B z component / B y component).

2. A block has a mass of 40.0 kg . The coefficient of static friction between the block and the level floor on which it rest is 0.781 . A horizontal force of 424 N is applied to the block to the right. Will the block move?

Após uma grande tempestade no mar, um veleiro ficou em pedaços, e o velejador esperou por horas no mar até que a equipe de salvamento chegou. Considere que, na situação desse salvamento, com a ajuda de um helicóptero, o velejador e um bombeiro, de massa 80,0 kg cada um, estão presos à corda e são içados com uma aceleração vertical para cima durante 10,0 s. Considerando uma aceleração gravitacional de 10 m/s^2 se o impulso da força de tração durante esse período de 30000 N · s, o valor do módulo dessa aceleração em m/s^2, vale: a) 1,18 . d) 8,75 . b) 2,56 . e) 16,5 . c) 4,20 .

In the Baroque Era, airflow through an organ was generated by a water wheel powered by a local stream or river someone (usually a small boy) treading on a large set of bellows a steam-powered pump behind the pipes the organist pushing down the pedal board with his or her feet

What is the numerical value that reflects body weight adjusted for height and is used to assess risk for chronic health problems?

Given the figure below, what is the height?

The rate of change in the height of a falling object is a function of time given by d h/d t = 25 - 9.8 t Where d h/d t is in meters per second and t in seconds. Which of the following correctly represents the change in height of this object on the time interval [0,2] ? ○ ∫ from 0 to 2 of (25-9.8 t) d t ∫ from 2 to 0 of (25-9.8 t) ∫ from 0 to 2 of (25-9.8 t) ∫ from 2 to 0 of (25-9.8 t) d t Compute the change in height on [0,2]. Δ h =

One sample of gas is at 0°C, while another is at 100°C. They are combined and end up at 50°C. Select the best description of what is happening. A Heat flows from the cooler sample to the warmer sample until the samples are the same temperature B Heat flows from the warmer sample to the cooler sample until the samples are the same temperature No heat flow occurs because the individual particles have the same kinetic energy as before, only the average is different

14. What is the main advantage of ABS brakes over standard brakes A. ABS brakes allow you to brake hard without locking up the wheels and without loss of steering B. ABS brakes are ONLY for slippery conditions C. ABS brakes make is possible to stop 200% faster than regular brakes D. ABS allow you to drive faster and brake less often

Solving Right Triangles For ∠Z, create tig ratios for sin cas, and tar: (1 point) sin (Z)=9 / 15, cos (Z)=12 / 15, tan (Z)=9 / 12 sin (Z)=9 / 12, cos (Z)=9 / 15, tan (Z)=9 / 15 sin (Z)=12 / 15, cos (Z)=9 / 15, tan (Z)=9 / 15 sin (Z)=9 / 12, cos (Z)=9 / 15, tan (Z)=9 / 15

Your velocity is given by v(t)=1 t^2+6 in m/sec, with t in seconds. Estimate the distance, s, traveled between t=0 and t=8. Use the average of the left and right sums with 4 subdivisions.

This energy diagram shows the allowed energy levels of an electron in a certain atom or molecule: Use this diagram to complete the table below. - Which is the ground state? A - How many excited states are there? - How many lines are in the absorption line spectrum? ? - Which transition causes the absorption line at the shortest wavelength? - Which transition causes the absorption line at the longest wavelength?

Balls are attached to light rods and can move in horizontal circles as shown in the figure (Figure 1) r m F r 2m 2F 2r m F 2r 2m 2F 1 2 3 4 Rank in order, from smallest to largest, the torques τ1 to τ4 about the centers of the circles. To rank items as equivalent, overlap them. Reset Help τ1 τ2 τ3 τ4 the smallest torque the largest torque

Assuming the acceleration due to gravity is 10 m / s^2, how long will it take for a ball be falling 32 m / s?

Climate vs. Weather Hexagonal Thinking Today you will use the word bank below to fill in the hexagons. First, identify words that are connected in some way. Place each word somewhere in the hexagon web-putting words that are somehow connected next to each other. When you are done, number your connections and explain the connections in 1 sentence each on the back. Word Bank ↓ Climate change Daily forecast Climate Weather Human activity Long term averages Meteorology Climatology CO2 increasing

HII regions can exist only if there is a nearby star hot enough to ionize hydrogen. Hydrogen is ionized only by radiation with wavelengths shorter than 91.2 nm. What is the temperature in kelvins of a star that emits its maximum energy at 91.2 nm? (Use Wien's law.) Temperature = K

The endpoints of CD are C(1,2) and Translation: (x, y) -> (x+4, y) Reflection: in x-axis Reflection in y-axis Rotation: 90° about the origin

Find the vertex, focus, and directrix of the parabola. Graph the equation. (y+1)^2=4(x-1) The vertex of the parabola is (Type an ordered pair.) The focus of the parabola is (Type an ordered pair.) The directrix of the parabola is (Simplify your answer. Type an equation.)

This type of stress can result in reverse faults (rock slides up the fault plane) shear differential compresjonal tensional

Four objects are held in position at the corners of a rectangle by light rods as shown in the figure below. (The mass values are given in the table.) m1(kg) m2(kg) m3(kg) m4(kg) 2.70 1.70 3.50 2.50 (a) Find the moment of inertia of the system about the x-axis. 4.0 kg ⋅ m^2 (b) Find the moment of inertia of the system about the y-axis. 4.0 kg ⋅ m^2 (c) Find the moment of inertia of the system about an axis through O and perpendicular to the page. 4.0 kg ⋅ m^2

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