Physics

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If a racehorse starts from rest and accelerates at a rate of 4.7 m / s^2, how long does it take the horse to go 20 m? A. 9.1 s B. 4.3 s C. 8.5 s D. 2.9 s
Label the parts of the lens in the image below. WORD BANK: - rear lens cap mount - focus ring - autofocus manual switch - filter thread or lens cap mount → Press hotspot. Add label to the corresponding number below the image.
Given: R1=30 Ω, R2=28 Ω, Vo=84 V, I=3 A, calculate the node voltage, V1.
How does air resistance affect the motion of falling objects?
Convert the tungsten melting point temperature, 6192°F into Kelvin units. 11,451 K 11,476 K 6,465 K 3,681 K 3,695 K
A hydrogen atom exists with its electron in the n=4 state. The electron undergoes a transition to the n=3 state. Calculate a. The energy of the photon emitted in Joules (J) b. Its frequency in Hz c. Its wavelength in nanometers (nm).
In the absence of air resistance two balls are thrown upward from the same launch point. Ball A rises to a maximum height above the launch point that is four times greater than that of ball B. The launch speed of ball A is times greater than that of ball B.
Colonial Funds claims to have a bond fund which has maintained a mean share price of 14.00. They claim that the standard deviation of the share price is 0.19. To test this claim, the investor randomly selects 12 days during the last year. He finds an average share price of 13.80 with a standard deviation of 0.1302. Can the investor conclude that the share price of the bond fund varies from Colonial Funds claims at α=0.05? Step 1 of 5: State the hypotheses in terms of the standard deviation. Round the standard deviation to four decimal places when necessary. Answer H0: Ha:
Identity the scatter diagram corresponding to r=-1. Choose the correct answer. A B. c. D.
Convert 158°F to °C. Write your answer in proper, simplified form. Be sure to pick the correct label for your answer. °C °F ・ temperature
A fox locates rodents under the snow by the slight sounds they make. The fox then leaps straight into the air and burrows its nose into the snow to catch its meal. If a fox jumps up to a height of 93 cm, calculate the speed v at which the fox leaves the snow and the amount of time t the fox is in the air. Ignore air resistance. v= m / s t= s
4. The effective voltage supplied by a sine wave is the constant value that would be supplied by a DC power source. Which voltage represents the "effective" voltage of a sinusoidal signal with no DC offset? What if a DC is applied? 5. What two values were used to calculate the Vrms? Which one gives the correct value for both the signal without the DC offset and with the DC offset? Why?
I am sitting on a seesaw opposite my young nephew. The seesaw is 12.2 feet long and has a pivot in the middle. I weigh 120.1 lbs while my nephew weighs 31.6 lbs . What is the magnitude of the initial net torque on the seesaw (in ft -lbs)?
Un reservorio de agua posee en el agua, en el fondo, una válvula de 6 cm de diámetro. La válvula se abre por acción del agua cuando ésta alcanza 1,8 m encima del nivel de la válvula. Suponiendo que la densidad del agua es 103 kg / m 3 y la aceleración local de la gravedad es 10 m / s 2, calculo la fuerza necesaria para abrir la válvula.
Question 5 of 10 A digital scale reports a 10 kg weight as weighing 8.975 kg . Which of the following is true? A. The scale is both accurate and precise. B. The scale is precise but not accurate. C. The scale is neither precise nor accurate. D. The scale is accurate but not precise.
Given s(t)=t+3, where s(t) is in miles and t is in hours, find each of the following. a) v(t) b) a(t) c) The velocity and acceleration when t=2 hr d) When the distance function is given by a linear function, there is uniform motion. What does uniform motion mean in terms of velocity and acceleration?
Pregunta 9 Guideo, desarrollo una aplicación de RA que permite: A Disminuir las pérdidas de productos en los locales. (B) Aumentar las experiencias físicas y de entretenimiento de los clientes. (C) Disminuir los riesgos de vida de los clientes. (D) Aumentar las experiencias de degustación de los clientes.
An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.500 m / s^2. If the wind's acceleration lasts for 2.10 s, find the magnitude r and direction θ (measured counterclockwise from the easterly direction) of the bird's displacement over this time interval. Assume that the bird is originally traveling in the +x direction and that there are 1609 m in 1 mi. r= m θ=
Determine V0 in the given circuit. Assume A=19 Ω and B=16 Ω.
The speed of an object as a function of time is given by the following equation: v^2 = (8 m^2/s^4) t^2 What is the magnitude of the object's acceleration (in m / s^2 ) at t=3.8 s?
A conical container, oriented such that its vertex is at the bottom, has radius 10 ft and height 40 ft. It is filled to a height of 35 ft of a liquid weighing 64.4 lb / ft^3. How much work will it take to pump the contents to the rim? How much work will it take to pump the liquid to a level of 5 ft above the cone's rim? The amount of work required to pump the liquid to the rim of the tank is [square] ft-lb. (Round to the nearest whole number as needed.)
Problem 2: (14% of Assignment Value) Consider a grey squirrel falling from a tree to the ground. Use a coordinate system in which positive is downward for this problem. Part (a) Find the squirrel's velocity, in meters per second, just before hitting the ground when it falls from a height of 1.9 m. Ignore air resistance. v=
If we hit a stake with a hammer, we call the force by the hammer the action force. What is the reaction force?
Find a function r(t) that describes the line passing through P(2,9,4) and Q(7,8,9).
(V-V₁)/(1-c) = V₁/c
37 2 points Chest radiographs and upright abdominal studies are conveniently performed using a(n) variable height table. tilting radiographic table. upright cassette holder or Bucky. interventional C-arm system with a fixed SID. Previous
The x-ray tube has a positive and negative side to its operation. Because of this, the x-ray tube is considered to electrically be a microprocessor. tetrode. invertor. diode.
Which of the following is not a general difference between a planet and a star? Planets orbit stars, and stars orbit the center of the galaxy. Planets are smaller than stars. Planets are dimmer than stars. Planets are made of rock and stars are made of gas.
Interferencia en películas delgadas. (1.5 puntos) la película lagrimal que cubre la superficie del ojo está compuesta por varias capas, entre ellas, la capa lipídica que es crucial para prevenir la evaporación de la lágrima acuosa subyacente. El grosor y la calidad de esta capa lipídica afectan directamente la estabilidad de la película lagrimal y, en consecuencia, la calidad de la visión. En condiciones como el síndrome de ojo seco, la capa lipídica puede volverse más delgada, afectando la interferencia de la luz que incide sobre ella y alterando la percepción visual. Su grosor puede determinarse mediante técnicas utilizan patrones de interferencia, en función del color de estos últimos. En un ojo sano, la capa lipídica de la película lagrimal tiene un grosor de unos 110 nm y un índice de refracción de 1.48. La película se ubica sobre la córnea, la que posee un índice de refracción de 1.38. Considere que se ilumina el ojo (desde el aire) con una luz monocromática con longitud de onda de 530 nm. a) Determine el número de franjas brillantes y oscuras que se presentan en un ojo sano. b) Considere ahora un paciente con blefaritis (inflamación del párpado). Al realizarle las pruebas correspondientes, se observa un patrón de interferencia con dos franjas brillantes, correspondientes al máximo central y a un máximo de orden 1. Evaluando el segundo máximo de interferencia, determine el grosor de su capa lipídica. c) Según lo discutido en clases, las fuentes de luz con las que nos encontramos a diario son mayormente no coherentes. Uno de los síntomas de la blefaritis incluye una visión borrosa. Teniendo esto en cuenta, discuta si este síntoma se puede asociar a la diferencia en los patrones de interferencia observados. Si su respuesta es negativa, ¿a qué otro fenómeno físico podría asociar este síntoma?
Compute the vertical and horizontal components for each of the forces shown.
P=20-(1/3) Q Plot the relationship between P and Q on the following graph. Note: Price (P) is on the vertical axis and quantity (Q) is on the horizontal axis. The slope of this line is
Select all that apply Select all of the following that have the same direction as the average acceleration. Change in velocity Initial velocity minus final velocity Final velocity minus initial velocity
A baseball diamond is in the shape of a square with 80 ft sides. How far is it from home plate to second base? Give the exact value. Write the answer in simplest form. Then give an approximation to the nearest tenth of a foot.
My 6 kg cat wants to push his box of kitty chow off the table so it will spill a snack for his afternoon "tea". The box has a mass of 1 kg (that's 2.2 lb or 9.8 N of gravitational downward force) and the coefficient of friction with the table top for both kitty paws and box is 0.25 . About how much force does he have to push with to get the box to begin to slide? Pick the closest answer to what you calculate using your understanding of static frictional forces. (A) 15 N (B) 25 N (C) 2.5 N (D) He will slide before the box does (E) 2.2 lb (F) 9.8 N Continue Last saved 4:59:46 PM
2. HWY 1 has a posted speed limit of 55 mph and you know that you VW bus does is not the best at cornering on these winding roads so you travel at only an average of 50 mph . It's ok you're not in a hurry. Assuming an average speed of 50 mph , how long will it take you (hours and minutes) to arrive in San Diego which is 460 miles away? Show your calculations. All numeric values should be accompanied by a unit and organized in a single linear calculation.
Two hydraulic cylinders are connected at their piston ends (cap ends rather than rod ends) by a single pipe. Cylinder A has a 2-in diameter and cylinder B has a 4-in diameter. A 500-lb retraction force is applied to the piston rod of cylinder A. Determine the a. Pressure in cylinder A b. Pressure in cylinder B c. Pressure in the connecting pipe d. Output force of cylinder B
A rock is being thrown horizontally at a speed of 12 m / s off the top of an 30 m tall building. How far does the rock land from the base of the building? Please express your answer in three significant figures.
An underwater diver sees the sun 54° above horizontal. How high is the sun above the horizon to a fisherman in a boat above the diver? Express your answer to two significant figures and include the appropriate units.
If an object is projected upward with an initial velocity of 123 ft per sec, its height h after t seconds is h=-16t^2+123t. Find the height of the object after 4 seconds. The height of the object after 4 seconds is ft.
Question 9 of 35 Source: Adjusted from Quantum Mechanics A. What is the following expression? A. A name for a source justification B. e^(ipx) = cos(px) + i sin(px) (Position representation of a plane wave from a wave packet.) C. e = mc^2 D. A name for a degree requirement course title (e.g. PHYS 2906)
As water freezes, it begins to
1. Determine the magnitude, direction, and sense of the resultant for the 2 -force system shown.
Encuente el valor de A(ω) / F0 correspondiente a la frecuencia f0. Una cuerda de una guitarra tiene una masa de 9 g por cada metro, y está sometida a una tensión de 9 N. Una onda de 5 mm de amplitud y 440 Hz de frecuencia se propaga a través de la cuerda. a Escriba una ecuación que pueda describir esta situación. b Halle la velocidad de propagación de las ondas en dicha cuerda. c Calcule la longitud de onda. d Calcule la potencia promedio que transporta. e Que valor de frecuencia permite disminuir la potencia promedio a un cuarto y cual es la longitud de onda resultante.
Problem 2: (6% of Assignment Value) A skydiver descends d1=315 meters in t1=8.9 s before letting out his parachute. After the chute opens, he descends an additional d2=895 meters in t2=132 s. See the figure. - Part (a) Enter an expression for the skydiver's average speed, vavg, during the period before letting out the chute in terms of the given quantities. vavg, 1 = d1 / t1 Correct! - Part (b) Enter an expression for the skydiver's average speed, vavg,2, during the period after letting out the chute in terms of the given quantities. vavg 2 = d2 / t2 Correct: Part (c) Enter an expression for the skydiver's average speed during the entire fall, vavg, in terms of the given quantities. vavg =
A cart slows down while moving away from the origin. What do the position and velocity graphs look like?
Which statement is a scientific conclusion? A. Silver is not widely used to conduct electricity because it is expensive. B. Silver wires conduct electricity better than copper wires. C. Silver rings are prettier than copper rings because silver is shinier. D. Will silver wires conduct electricity better than copper wires?
Homework 2 Begin Date: 9/2/2024 11:59:00 PM Due Date: 9/10/2024 11:55:00 PM End Date: 9/10/2024 11:55:00 PM Problem 3: (13% of Assignment Value) A uniform electric field of magnitude 19.6 N / C is parallel to the x axis. A circular loop of radius 24.7 cm is centered at the origin with the normal to the loop pointing 37.4° above the x axis. Part (a) Calculate the electric flux in, newton squared meters per coulomb, through the loop. Φ= N · m^2 / C
How would miscellaneous supplies used in assembling a product be classified for a manufacturing company? Multiple Choice Fixed, period cost Fixed, product cost Variable, product cost. Variable, period cost
What two units of measurement describe speed? Distance and length Distance and time Average speed and distance Average speed and time
4. What is the field of view?
Select the answer that best completes the given statement. The slope of a vertical line is negative. undefined. positive. zero. one.
A scuba diver is 33 feet below sea level, while a hiker is 64 feet above sea level directly overhead on the cliffs overlooking the ocean. How many feet apart are they?
No triângulo retângulo isósceles xyz, em que xz=yz=3.0 cm, foram colocadas uma carga elétrica pontual Q4= no vértice x e uma carga elétrica pontual Qv=+B nC A intensidade do campo elétrico resultante em z, devido às cargas já citadas, é Dados o meio e o vácuo e a constante eletrostática do vácuo é k0=9 * 10^9 N * m^2 / C^2 a) 2 * 10^3 N / C. b) 6 * 10^3 N / C c) 8 * 10^4 N / C d) 10^4 N / C e) 10^5 N / C.
O gráfico a seguir representa o volume em função da temperatura de certa massa de um gás ideal. monoatômico, durante uma transformação isobárica do estado X para o estado Y, na qual a pressão foi mantida em 1,2 * 10^5 Pa. O trabalho, em joules, realizado pelo gás nessa transformação foi de: a) 1,8 * 10^4 c) 1,2 * 10^5 e) 6,0 * 10^5 b) 6,0 * 10^4 d) 1,8 * 10^5
How long will it take (a) a 1000 W heater to evaporate 1.0 kg of water that is already at 100°C, its normal boiling point (b) a refrigerator to freeze 0.40 kg of water that is already at 0°C, its normal freezing point, if it can remove energy at an average rate of 75 W?
modulus of elasticity is a structure insensitive property [it is a unique property of a material- it is a property of the atomic bond in the material, and can not be altered by changing chemical composition or of a material] [this therefore means stiffness is structure property]
When a star collapses and the escape velocity exceeds the speed of light, that star becomes a , white dwarf supernova black hole red giant
This problem is an example of critically damped harmonic motion. A mass m=5 kg is attached to both a spring with spring constant k=125 N / m and a dash-pot with damping constant c=50 N · s / m. The ball is started in motion with initial position x0=4 m and initial velocity v0=-23 m / s. Determine the position function x(t) in meters. x(t)= (4-3 t) e^-5 t set in motion with the same initial position and velocity, but with the dashpot disconnected (so c=0). Solve the resulting differential equation to find the position function u(t). In this case the position function u(t) can be written as u(t)=C0 cos (omega0 t-alpha0). Determine C0, omega0 and alpha0. C0= 4 omega0= 10 alpha0= 5.2185 (assume 0 leq alpha0<2 pi )
Use the given conditions to write an equation for the line passing through (-6,4) and parallel to the line whose equation is 5x-7y-6=0 The equation of the line is
If two objects of the same size move through the air at different speeds, which encounters the greater air resistance? Both encounter the same air resistance. The one at terminal velocity encounters less air resistance. The slower object encounters more air resistance. The faster object encounters more air resistance. Submit Request Answer
Deepa is preheating her oven before using it to bake. The initial temperature of the oven is 75 degrees and the temperature will increase at a rate of 25 degrees per minute after being turned on. What is the temperature of the oven 17 minutes after being turned on? What is the temperature of the oven t minutes after being turned on?
g'' is.... Select all that are True. sometimes positive always negative always positive called the "acceleration due to gravity" the same on every planet. different on every planet. called "gravity"
PROBLEMA 1 La trayectoria de una partícula está dada por: x=4 t^-2, y=(t^3+4)^-1, z=(t^2-5)^2, con x, y, z en [m] y t en [s] Calcule a los 1,5 [s]: a) la magnitud de la aceleración normat
Español A specific radioactive substance follows a continuous exponential decay model. It has a half-life of 14 minutes. At the start of the experiment, 84.6 g is present. (a) Let t be the time (in minutes) since the start of the experiment, and let y be the amount of the substance at time t. Write a formula relating y to t. Use exact expressions to fill in the missing parts of the formula. Do not use approximations. y = □ e^(□ t) (b) How much will be present in 23 minutes? Do not round any intermediate computations, and round your answer to the nearest tenth. □
Topic 8. Applications of Trigonometric Functions Solve the problem. An alternating current generator generates current with a frequency of 60 Hz. Suppose that initially, the current is at its maximum of 4 amperes. If the current varies in simple harmonic motion over time, write a model for the current I (in amperes) as a function of the time t (in seconds). Select one: a. I=2 cos (120 pi t)+2 b. I=4 cos (60 t) c. I=2 cos (60 t)+2 d. I=4 cos (120 pi t)
A sample of a radioactive substance has an initial mass of 62.3 mg. This substance follows a continuous exponential decay model and has a half-life of 22 hours. (a) Let t be the time (in hours) since the start of the experiment, and let y be the amount of the substance at time t. Write a formula relating y to t. Use exact expressions to fill in the missing parts of the formula. Do not use approximations. y= 62.3 * (1/2)^(t/22) (b) How much will be present in 13 hours? Do not round any intermediate computations, and round your answer to the nearest tenth. 41.4 mg
Define the points Q(-7,-8) and R(8,4). Carry out the following calculation. Express QR in the form a i+b j. QR= i j (Simplify your answers.)
Rank the following colors of light from lowest energy to highest energy: blue (λ=453 nm), red (λ=670 nm), green (λ=525 nm), yellow (λ=572 nm). Select one: a. red, yellow, green, blue b. blue, yellow, green, red c. red, green, yellow, blue d. blue, green, yellow, red
What is the center and radius of (x+10)^2+(y+1)^2=25?
Which structure reduces friction around tendons? ligaments bursae origins insertions myofibrils Question 19 3 pts
Question 10, 2.4.47 Part 1 of 3 Suppose an object moves along the y axis so that its location is y=f(x)=x^2+x at time x (y is in meters, x is in seconds). Find (A) The average velocity (the average rate of change of y with respect to x) for x changing from 4 to 8. (B) The average velocity for x changing from 4 to 4+h.
Flux, Parallax, Luminosity Star 1, 4.19 × 10^-9 W / m^2, 0.094'2, Ls
A bicycle tire pump has a piston with area 0.46 in^2. If a person exerts a force of 27 lb on the piston while inflating a tire, what pressure does this produce on the air in the pump? psi
What are the coordinates of the corner point where the minimum value of P occurs? Select the correct choice below and fill in any answer boxes present in your choice. A. The coordinates are . (Type an ordered pair.) B. There is no minimum value of P.
The displacement vectors A and B shown in the figure below both have magnitudes of 3.85 m. The direction of vector A is θ=39.0 degrees counterclockwise from the +x axis. (C) Find B-A graphically. magnitude m direction degrees counterclockwise from the +x axis (d) Find A-2B graphically. magnitude m direction degrees counterclockwise from the +x axis
In a study of helicopter usage and patient survival, among the 47,773 patients transported by helicopter, 260 of them left the treatment center against medical advice, and the other 47,513 did not leave against medical advice. If 40 of the subjects transported by helicopter are randomly selected without replacement, what is the probability that none of them left the treatment center against medical advice?
What is the reaction when you push against a wall? a. The wall moves forward. b. The wall does nothing. c. The wall pushes back against you with equal force. d. The wall moves backward.
This object can be used to separate white light into the colors of the spectrum.
A car going down a (20^circ) hill speeds up from (30 mathrm~m / mathrms) with an acceleration of (3 mathrm~m / mathrms^2) for 6 seconds. The car has a mass of 1000 kg , friction is negligible ((mathrmk=0)). Find how far the car went after those 6 seconds, in meters. [ cos (20^circ)=0.9397 sin (20^circ)=0.3420 ]
a muon (a subatomic particle with a mass of 1.884 × 10^-25 g) traveling at 315.0 m / s
Consider the following integral [ int fracsin (x)cos ^4(x) d x ] - Which of the following methods of integration is the best for this antiderivative problem? Elementary Antiderivative Integration by Substitution Integration by Parts Trigonometric Substitution Integration by Partial Fractions
What part of a molecule is most likely to react with other molecules? - the presence or absence of double bonds - the presence or absence of functional groups - the number of asymmetric carbon atoms present - the orientation of the carbon skeleton, as either ringed or linear - the number of carbon atoms comprising the molecule's skeleton
What scenario could be best represented by the graph below? A person rolls a ball down a steep hill A person's height during their lifetime A plane's height during a trip around the world A person hits a golf ball
A marathon runner runs with an average velocity of 5.5 m / s. How long in seconds does it take for the runner to travel 158 m ? (Round to the nearest second.)
Check all that apply. A. π̅ and [M lie in the same plane. B. π̅ and [R̅ are parallel. C. K̅ and [M are perpendicular. D. R̅ and ITM do not lie in the same plane. E. J̅ and [W̅ are skew. F. π̅ and I π do not intersect.
Question 5 of 10 Lines that are not in the same plane are called lines. A. skew B. perpendicular C. parallel D. transversal
Lab 2 Intro to Vectors B. Graphical Addition of Vectors ( 30 pts ) Table 2: Graphical Force Data (11 pts) Scale 7^7 cm=1.0 N Force Magnitude of Force (N) Magnitude of Force converted (cm) Direction of Force (deg) F1 .98 6.86 0 F2 1.96 15.72 145 F3 1.2793 8.95 300 FR 1.2793 6.9 20 1. Use the graphical head to tail method of vector addition to add the two force vectors F1 and F2. Show conversions using scale given in Table 2. Record the magnitude and direction of the graphical resultant force, FR, in Table 2. ( 11 pts ) 2. On the same sheet of graph paper and using the same scale as in the previous exercise, draw an arrow that represents the balancing or equilibrium force, F3 and record in Table 2. (2 pts) 3. How well do the magnitude and direction of the experimentally determined resultant FR (in the fourth row of Table 1) agree with the magnitude and direction of the graphical head to tail resultant FR (in fifth row of Table 1). Show a percent difference for each. ( 6 pts )
A thin rod extends from x=0 to x=17.0 cm. It has a cross-sectional area A=6.00 cm^2, and its density increases uniformly in the positive x-direction from 3.50 g / cm^3 at one endpoint to 19.0 g / cm^3 at the other. (a) The density as a function of distance for the rod is given by ρ=B+C, where B and C are constants. What are the values of B (in g / cm^3) and C (in g / cm^4)? B= 9 / cm^3 C= g / cm^4 (b) Finding the total mass of the rod requires integrating the density function over the entire length of the rod. The integral is written as follows. m=integral from 0 to 17.0 cm of (B+C)(6.00 cm^2) dx What is the total mass of the rod (in kg)?
The following problem is similar to a problem from your textbook. The table below shows the position s of a car at time t. Round your answers to one decimal place. t(sec) 0 0.2 0.4 0.6 0.8 1 s(ft) 0 2.7 2.8 5.2 5.8 7.6 Estimate the velocity at t=0.2 by averaging the average rate of change over the left and right intervals.
Multiple Choice Question 1.22 A bird flies 3.4 km due west and then 1.6 km due north. Part A What is the magnitude of the bird's displacement? 1.6 km 3.4 km 3.8 km 5.0 km Submit Request Answer Provide Feedback
3. (I) If Vx=9.80 units and Vy=-6.40 units, determine the magnitude and direction of V. 4. (II) Graphically determine the resultant of the following three vector displacements: (1) 24 m, 36° north of east; (2) 18 m, 37° east of north; and (3) 26 m, 33° west of south.
Se desea sostener el cuerpo de 140 lb que se muestra en la figura. Diga qué tensión T deberá aplicarse para lograrlo y cuál debe ser el ángulo. (Sol. T=81.2 lb ; Θ=29.5°)
Temos um motor elétrico, de fcem 20 V e resistência interna 2 Ω, atravessado por uma corrente elétrica de 10 A. Nessas condições, calcule: a) A ddp em seus terminais b) O rendimento do motor
Pregunta 4 10 pts Por un conductor sólido cilíndrico muy largo con sección transversal circular de radio R=25 cm circula una corriente I=8 A uniformemente distribuida a través del área de la sección transversal. La corriente encerrada (en A ) a una distancia r=10 cm del eje del conductor es: 3,20 A 4,00 A 5,06 A 1,28 A
UNIVERSIDAD MAYOR Escuela de Geologia GEOB 1003 Geofisica Sem 2-2024 Profesor Iván Rojas Churkovic Solemne 1 Solemne 1 ( 72 puntos totales) Puede utilizar calculadora. Aproxime sus resultados a 3 cifras significativas. Ponga nombre a todas las hojas que entregue. No habrá salidas al baño. Tiempo para resolución; 2 hr 30 min . Pregunta 1 (10 puntos) Complete la siguiente tabla respecto a las unidades de medida del sistema internacional. Cantidad unidad Cantidad unidad Longitud N tiempo carga eléctrica kg N / C velocidad T m / s^2 intensidad de corriente Pregunta 2 (12 puntos) a) [2 pts.] ¿Qué unidad de medida tiene la constante de Coulomb? ke=8.9876 * 10^9[XXX ] b) [2 pts.] Explique con sus propias palabras el principio de superposición. c) [2 pts.] Para el fenómeno de luz u ondas electromagnéticas: ¿cuál intervalo de longitudes de onda representa el espectro visible? d) [2 pts.] ¿Qué longitud de onda tendrá una onda electromagnética que tenga una frecuencia de 500 KHz ? e) [4 pts.] Encuentre el vector de Poynting para los siguientes campos E=(80 i+32 j-64 k) y B=(0.2 i+0.08 j+0.29 k) Pregunta 3 (6 puntos) particulas están ubicadas colinearmente, a una distancia de 1[m]. Una de ellas tiene carga igual a 5 μC), mientras que la otra tiene carga igual a (6 μC). -2.50 μC Encuentre la posición en medio de ambas particulas donde el campo eléctrico es 0.
Question 4 Problem may be attempted multiple times 0.00 points out of 1.00 Part 1 Calculate the displacement and velocity at a time of 0.500 s. displacement: velocity: Part 2 Calculate the displacement and velocity at a time of 1.00 s. displacement: velocity:
Three regions are defined in the figure. Find the volume generated by rotating the given region about the specified line. R2 about AB
Question 13 of 20 Read this sentence: Hunting endangered whales should be outlawed. What type of claim is this sentence? A. Claim of fact B. Claim of policy C. Claim of cause and effect D. Claim of definition
What is the magnitude of the acceleration, a in m / s^2, experienced by charge Q2? a= m / s^2
Name(print) 1. Ultraviolet light is divided into three categories, UV-A, UV-B, and UV-C. The wavelength ranges (in nanometers) are shown in the Figure. Hint: 1 m = 10^9 nm. (a) Which type of UV-radiation is most energetic? UV-C (b) Calculate the energy (in Joules) of one photon of UV-A radiation (any wavelength in its range).
The weight of bodies may change somewhat from one location to another as a result of the variation of the gravitational acceleration g with elevation. Accounting for this variation using g = a - bz, where a = 9.807 m / s^2 and b = 3.32 x 10^-6 s^-2, determine the weight of a 90-kg person at sea level (z=0), in Denver (z=1610 m), and on the top of Mount Everest (z=8848 m).
In April 1974, John Massis of Belgium managed to move two passenger railroad cars. He did so by clamping his teeth down on a bit that was attached to the cars with a rope and then leaning backward while pressing his feet against the railway ties. The cars together weighed 700 kN (about 71 tons). Assume that he pulled with a constant force that was 2.1 times his body weight, at an upward angle θ of 32 degrees from the horizontal. His mass was 81 kg, and he moved the cars by 1.0 m. Neglecting any retarding force from the wheel rotation, find the speed of the cars at the end of the pull.
Choose the alternative that best defines potential energy. A It is energy in transfer between two systems when one of them is hotter than the other. B It is the energy associated with gravitational force or with the chemical composition of a substance. C It is energy that cannot be created, destroyed, or transformed from one form to another. D It is the energy of motion.
The orbital speed (s) of an earth satellite is related to its distance (r) from the earth's center by the formula √r = .2029 × 10^7 / 3. If the satellite's orbital speed is 4 × 10^3 meters per second, find its altitude a (in meters) above the earth's surface, as shown in the illustration. Round the answer to the nearest meter.
Consider the line L(t)=⟨1-3t, 2-t,-5t⟩. Then: L is neither to the plane 2y-5x-4z=2 L is to the plane 6x+2y+10z=20 L is to the plane 6z-(6x+12y)=0 L is neither to the plane 4.5x+1.5y+7.5z=-30
John says the relationship between segment BC and segment B'C' is that they are parallel. Adam says the line segments fall on the same line. Who is correct and why? John because the line segment does not pass through the center of dilation and therefore its image is parallel to the pre-image. Adam because the line segment does pass through the center of dilation and therefore its image falls on the same line as the pre-image. John because the line segment does pass through the center of dilation and therefore its image is parallel to the pre-image.
Suppose that the limit as t approaches 3 of t times g(t) equals 12. Show that the limit as t approaches 3 of g(t) exists and equals 4.
The temperature of a 2 m aluminum rod is increased by (400^circ mathrmC). What is the new length of the aluminum rod? (mathrma=23 times 10^-6 / ^circ mathrmC)
Use the given conditions to write an equation for the line in point-slope form and in slope-intercept form. Passing through (8,-7) and perpendicular to the line whose equation is y=1/2 x+5
Use k=11 Sea f(x)=∫ from k to kx e^(u^2) du Si f'(k)=Ae^B Entonces A+B=?
Un corpo è in equilibrio su un piano inclinato. La forza equilibrante ha modulo 122 N e la forza premente perpendicolare al piano ha modulo 212 N. - Calcola il modulo della forza-peso. - Quanto vale la massa del corpo? [245 N, 25 kg]
The fuel gauge shows how much fuel is left in a 12 gallon tank. How far can you drive if the car's average fuel consumption is 40 miles per gallon?
OU1Z 3. 3상 전파 정류회로에서 저항부하인 경우 부하의 평균 전압은 얼마인가? (1) 2Vm/π (2) 3√3vm/π (3) √3vm/2π (4) 3√3vm/2π 정답 2
y=x+4z-5 4x+3y-2z=5 z=-2x+2
Stellen Sie die Formel nach der gesuchten Größe um. 1/f = 1/g + 1/b a) nach f, b) nach g und c) nach b.
You put a straw into a glass of water, place your finger over the top so that no air can get in or out, and then lift the straw from the liquid. You find that the straw retains some liquid. How does the air pressure P in the upper part compare to atmospheric pressure PA? greater than atmospheric pressure Equal to atmospheric pressure Less than atmospheric pressure Cannot be determined from the given information
173 points What type of stress is exhibited by two force vectors acting on the same line, inward? Compression Torsion Shear
(b) Fig. 1.1 shows a graph of speed against time for a train. After 100 s the train stops at a station. Fig. 1.1 (i) For the time interval between 40 s and 100 s , calculate the distance travelled by the train.
The metabolic condition called results from the destruction of the beta cells in the pancreas due to an autoimmune response. Multiple Choice gestational diabetes Type 1 diabetes Type 2 diabetes insulin-independent diabetes mellitus beta cell diabetes
Calculate the volume occupied by 0.627 mol of nitrogen gas at a pressure of 1.06 atm and a temperature of 287 K .
Find the volume of the solid with the given base and cross sections. The base is the circle x^2 + y^2 = 16, and the cross sections perpendicular to the x-axis are triangles whose height and base are equal.
10. The force that causes a satellite to orbit Earth is gravity.true or false
Which of the following is NOT a mechanism by which planets around other stars are being found? Gamma ray telescopes detect the abundance of gamma rays coming from planets compared to their host stars. Light from the star is observed to drop slightly as planets pass between the star and Earth. Although dim compared to their stars, new telescopes can image these planets directly, like Mars or Jupiter. Gravity from orbiting planets pulls stars slightly, making them "wobble" in the sky.
If an earthquake measures 5.6 on the Richter Scale, what is the intensity of this earthquake, relative to a 0 -level earthquake? Round off your answer to the nearest integer.
Part A The electric field midway between two equal but opposite point charges is 588 N / C, and the distance between the charges is 16.0 cm. What is the magnitude of the charge on each?
If a basketball player shoots a foul shot, releasing the ball at a 45-degree angle from a position 6 feet above the floor, then the path of the ball can be modeled by the function, h(x)=-44 x^2/v^2+x+6, where h is the height of the ball above the floor, x is the forward distance of the ball in front of the foul line, and v is the initial velocity with which the ball is shot in feet per second. Suppose a player shoots a ball with an initial velocity of 27 feet per second. Answer parts (a)-(d). (b) Find the height of the ball after it has traveled 8 feet in front of the foul line. The height of the ball is 17.86 ft. (Round to two decimal places as needed.) (c) Find additional points and graph the path of the basketball. A. B. C. D. (d) The center of the hoop is located 10 feet above the floor and 15 feet in front of the foul line. Will the ball go through the hoop? Yes No If not, with what initial velocity must the ball be shot in order for the ball to go through the hoop? Select the correct choice and, if necessary, fill in the answer box within your choice. A. The initial velocity must be feet per second. (Round to two decimal places as needed.) B. The ball will go through the hoop with the given initial velocity.
A rope is threaded such that it is supporting a movable pulley directly in the middle between a fixed anchor point 2.8 m high on the wall and a fixed pulley at the same height a distance 4.0 m away. After going over the fixed pulley, the rope angles downward, reaching the ground a distance of 7.0 m away from the pulley. A mass of 36 kg is hanging from the movable pulley, and is initially 0.8 m off the ground. If the end of the rope that reaches the ground is pulled 0.3 m further away from the pulleys, what will the change in the mass' gravitational potential energy be? Answer to one decimal place.
An airplane starts moving with a thrust force of 434 Newtons at an angle 14 degrees. It experiences air resistance of 23 Newtons at an angle 149 degrees. Find the MAGNITUDE of the resultant force acting on the plane. Give your answer in Newtons, however do not explicitly include any units in your answer (that is, do not include an " N " in your answer, enter a numerical answer only).
Module 2 Homework Begin Date: 8/26/2024 12:01:00 AM Due Date: 9/9/2024 11:59:00 PM End Date: 9/10/2024 11:59:00 PM Problem 6: (13% of Assignment Value) Three capacitors and a battery are connected as shown. The capacitance values are C1=9.6 μF, C2=5.2 μF, and C3=7.8 μF. The battery voltage is V0=12 V. Part (a) Enter an expression for the equivalent capacitance, C12, of the two capacitors C1 and C2 in terms of the variables given in the problem statement. C12=
The location of the Earth in the Milky Way Galaxy is in the center of the Galaxy on the edge of the Galaxy as far from the center as you can measure a little less than 30,000 LY from the center something astronomers have not yet measured Earth is not located in the Milky Way Galaxy
An X-ray photon of wavelength 150 pm ejects an electron from the inner part of an atom. The speed of the electron was measured and found to be 2.14 × 10^7 m / s. How tightly was it bound in the atom, in J?
What form of business ownership is a contractual agreement whereby someone with a good idea for a business sells others the rights to use the business name and sell a product or service in a given territory in a specified manner? contract manufacturing franchising licensing exporting
One of the student's results is given below. Pressure = 1.6 x 10^5 Pa volume = 9.0 cm^3 Calculate the volume of the gas when the pressure was 1.8 x 10^5 Pa. The temperature of the gas was constant. [3 marks] Volume = cm^3
ST is perpendicular to RS, RU is perpendicular to TU, and angle TRU is congruent to angle RTS. Complete the proof that triangle RTU is congruent to triangle TRS. 1. ST is perpendicular to RS - Given 2. RU is perpendicular to TU - Given 3. angle TRU is congruent to angle RTS - Given 4. angle S is congruent to angle U 5. RT is congruent to RT - Reflexive Property of Congruence 6. triangle RTU is congruent to triangle TRS
Three capacitors are arranged as shown in the figure. The voltage Vab=1,500 V across the combination. C1 has a capacitance of 9.00 pF, C2 has a capacitance of 18.0 pF and C3 has a capacitance of 27.0 pF . What is the voltage across C2 ? a) 257 V b) 430 V c) 470 V d) 1,500 V e) 826 V
Find the distance between the points. (5,4),(4,-1)
The average distance of Neptune from Earth is 2.67 × 10^9 miles. Write the distance, in miles, in standard notation.
A transformer has 500 turns of the primary winding and 10 turns of the secondary winding. a) Determine the secondary voltage if the secondary circuit is open and the primary voltage is 120 V. b) Determine the current in the primary and secondary winding, given that the secondary winding is connected to a resistance load 15 Ohms?
What is the speed of sound measured in miles per hour? (Give your answer to the nearest whole number.)
What is the conversion factor for parsecs to lightyears? (Use decimal notation. Give your answer to two decimal places.) conversion factor: What is the conversion factor for lightyears to parsecs? (Use decimal notation. Give your answer to two decimal places.)
Según el gráfico y los datos presentados la compañía que presenta el Rango intercuartílico (RIC) con menor variabilidad es (A) Sprint (B) T-Mobile (C) No se puede determinar (D) Verizon
Divide. 5+7 i / 1+i 5+7 i / 1+i (Simplify your answer. Type your answer in the form a +bi.)
We reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of significance to support the claim that the average time required to install the tile differs from 9 hours.
What was the name of territory France had obtained dominion over by 1887?
The graph shows the velocity of the object as a function of time. The various equal time intervals are labeled using Roman numerals: I, II, III, IV, and V. The net force on the object always acts along the line of motion Of the object. Which section(s) of the graph corresponds to a condition of zero net force?
A certain city covers an area of 42.8 mi^2. How many square kilometers is this? Use the conversion factor 1 mile = 1.61 km.
Block 1 and block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30° and 60° angles with the horizontal direction, respectively. If the coefficient of friction is the same in both cases, which of the blocks is going faster when it reaches the bottom of its respective incline? We must know the actual masses of the blocks to answer. Both blocks have the same speed at the bottom. Block 1 is faster. Block 2 is faster.
An inelastic collision of two objects is characterized by the following. Total momentum of the system is conserved. Total kinetic energy of the system remains constant. Total energy of the system remains constant. A and C are both true. A and B are both true.
Find the slope of the tangent line to the graph of the function at the given point. f(x)=3 x^2-6, (2,6)
1. Charles is exploring the Stellarium app and found SELF-PACED PRACTICE PROBLEM 1 vector addition the moon 30 units North of Vega while Venus is 70 units East of the moon. How far is Vega from Venus. Indicate both the magnitude and the direction
A 9 W lamp produces 108 lumens. Calculate the luminous efficacy of the lamp.
Problem 8: (11% of Assignment Value) In the diagram, the dashed lines are parallel to the x axis. The magnitudes of the vectors are A=10.5, B=6.6, D=23, and F=23. The angles, in degrees, are θA=30.0, θB=53.0, θD=37.0, and θF=30.0. - Part (a) v What is (A × F) · D ? (A × F) · D=0.000 Correct! Part (b) What is (A × D) ·(D × B) ? (A × D) ·(D × B)=
In the National Hockey League, the goalie may not play the puck outside the isosceles trapezoid behind the net. The formula for the area of a trapezoid is A=(1/2)(b1+b2)h. Complete parts (a)-(c). a. Solve the formula for the base b1. b1=(2A/h)-b2 b. Use the formula to find the length of the base next to the goal given that the height of the trapezoid is 11 ft and the base farthest from the goal is 28 ft.
Suppose that the P in this equation refers to the price Julie is willing to pay for an additional magazine, and the Q refers to the number of magazines to which Julie subscribes. Read the following statement carefully: "The more magazines Julie subscribes to, the less she is willing to pay for an additional magazine." Which of the following best summarizes the pattern of causality suggested by this statement? A change in Q causes a change in P. A change in P causes a change in Q. The relationship between P and Q is not a causal relationship.
Which of Newton's laws does the equilibrium rule illustrate? View Available Hint(s) Newton's third law Newton's law of gravity Newton's first law Newton's second law
Physics Question: Sum of 2 vectors A+B=?
Solve the following rational inequality (x-3)/(x^2-16)>0. Give your answer using interval notation.
The blue curve on the following graph shows the height of an airplane over 10 minutes of flight. The two black lines are tangent to the curve at the points indicated by A and B. The slope of the blue curve measures the plane's . The unit of measurement for the slope of the curve is At point A, the slope of the curve is , which means that the plane is at a rate of Calculating the slope, pay extra attention to the units of analysis.
In an open circuit, the value of current is zero and the value of voltage could be any.
A car rental company is interested in improving the customer experience. A data professional fixes typos and inaccuracies from a dataset containing feedback and ratings. They also verify and share their data-cleaning procedures with stakeholders. What step of the data analysis process does this scenario describe? Analyze Prepare Process Ask
Two long, straight wires are perpendicular to the plane of the paper and at a distance 0.3 m from each other, as shown in the figure. The wires carry currents of I₁=1.5 A and I₂=4.8 A in the direction indicated (out of the page). Find the magnitude and direction of the magnetic field (in μT) at a point A midway between the wires. You need to indicate the direction with a positive or a negative value for the magnetic field. Keep in mind that a vector is positive if directed to the right and negative if directed to the left on the x axis and it is positive if directed up and negative if directed down on the y axis. Your answer should be a number with two decimal places, do not include the unit.
Two tiny, spherical water drops, with identical charges of -8.00 x 10^-16 C, have a center-to-center separation of 0.925 cm. (a) What is the magnitude of the electrostatic force acting between them? (b) How many excess electrons are on each drop, giving it its charge imbalance?
Find the solution of the given initial value problem in explicit form. Determine the interval in which the solution is defined. y' = 4x / (1+2y), y(2)=0 y(x)= The solution is defined on the interval
A globe is 41.177 feet in diameter. Find its exact circumference (distance around) and then approximate its circumference. The exact circumference of the globe is (Simplify your answer. Type an exact answer in terms of π.)
Find the solution to the boundary value problem: d^2 y/d t^2 - 8 d y/d t + 12 y = 0, y(0) = 8, y(1) = 7 y=
16. 그림은 단위 시간당 속도 변화량이 일주 동을 하는 자동차를 나타낸 것이다. 1 초일 때 자동차의 속력은? (1) 6 m / s (2) 8 m / s (3) 10 m / s (4) 12 m / s (5) 14 m / s
A parachutist's rate during a free fall reaches 80 meters per second. What is this rate in feet per second? At this rate, how many feet will the parachutist fall during 15 seconds of free fall? In your computations, assume that 1 meter is equal to 3.3 feet. Do not round your answers. Rate: ft/s Distance fallen in 15 seconds: ft
Identify the exact value of the following expression: cos(75°) √6 + √2 / 4 √6 - √2 / 4 -√6 + √2 / 4 -√6 - √2 / 4 None of these are correct.
distance from substation energy requirements size transformers
Figure 3.55 The two displacements A and B add to give a total displacement R having magnitude R and direction θ.
Evaluate: lim as h approaches 0 of sin(h) / 8h
Question 4 Question: What is the role of monoamine oxidase in the synaptic cleft? Synthesizes neurotransmitters Degrades neurotransmitters Recycles neurotransmitters Transports neurotransmitters
Pergunta 5 Um oscilador harmônico amortecido tem equação de movimento dada por: x(t)=0,10 e^(-0,25 t) cos(4 pi t-0,82), com x(t) dado em metros e t em segundos. a) A amplitude do movimento é igual a m. b) A frequência do sistema é igual a Hz. c) A fase inicial é igual a rad. d) O periodo de oscilação é igual a s. e) A constante de tempo de amortecimento é igual a s.
A certain motor loses 25.0% of its energy input to friction. What is the efficiency of this motor? 75.0% 25.0% 85.0%
A car engine produces 300 HP. What is the power rating of this engine in kilowatts? [?] kW Hint: 1 HP=0.746 kW
Find the angle, in radians, between v=4i-4sqrt(3)j and w=-3sqrt(3)i+3j. The angle between v=4i-4sqrt(3)j and w=-3sqrt(3)i+3j is . (Type an exact answer using pi as required.)
A molecule with an uneven distribution of charges in different regions of the molecule. ionic compound polar molecule nonpolar molecule hydrophobic molecule
State whether the data described below are discrete or continuous, and explain why. The numbers of ingredients in different recipes Choose the correct answer below. A. The data are continuous because the data can take on any value in an interval. B. The data are discrete because the data can only take on specific values. C. The data are discrete because the data can take on any value in an interval. D. The data are continuous because the data can only take on specific values.
Multiple Cholce Question Which of the Dietary Reference Values assumes a population's average daily intake of a nutrient is adequate because no deficiency diseases are present? Estimated Aंverage Requirement Adequate Intake Recommended Dietary Allowance Tolerable Upper Intake Level
Find an equation of the line L. L is perpendicular to y=-2x.