A hydroelectric power facility converts the gravitational potential energy of water behind a dam to electric energy. (For each answer, enter a number.) (a) What is the gravitational potential energy (in J) relative to the generators of a lake of volume 75.0 km³ (mass = 7.50 x 10¹3 kg), given that the lake has an average height of 48.0 m above the generators? J (b) Compare this with the energy stored in a 9-megaton fusion bomb. Elake Ebomb -

A hydroelectric power facility converts the gravitational potential energy of water behind a dam to electric energy. (For each answer, enter a number.) (a) What is the gravitational potential energy (in J) relative to the generators of a lake of volume 75.0 km³ (mass = 7.50 x 10¹3 kg), given that the lake has an average height of 48.0 m above the generators? J (b) Compare this with the energy stored in a 9-megaton fusion bomb. Elake Ebomb -

Name: A hydroelectric power facility converts the gravitational potential e
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: A hydroelectric power facility converts the gravitational potential energy of water behind a dam to electric energy. (For each answer, enter a number.)(a) What is the gravitational potential energy (in J) relative to the generators of a lake of volu

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

(1) How many electrons are contained in a -1 C of charge? A. 5.4 × 10^15 electronsB. 5.4 × 10^18 electronsC. 6.2 × 10^15 electronsD. 6.2 × 10^18 electronsE. None of the Above (2) What is the total mass of the electrons in question 1? Me= 9.11 × 10^-31 kg A. 5.6 × 10^−12 kgB. 5.6 × 10^−15 kg C. 3.7 × 10^−12 kg D. 3.7 × 10^−15 kgE. None of the Above (3) If two equal charges, each of 1 C, were separated in air by a distance of 1 km, what would be the force between them? k = 9.0 × 10^9 Nm^2/C^2 A. 9.0 mNB. 9.0 kNC. 9.0 MND. 9.0 GNE. None of the Above (4) Two point charges, Q1 and Q2, are 3 m apart, and their combined charge is 20 µC. If one repels the other with a force of 0.075 N, what are the magnitudes of the two charges? A. 8 µC and 12 µCB. 10 µC and 10 µCC. 15 µC and 5 µCD. 18 µC and 2 µCE. None of the Above (5) From question 4, if one attracts the other with a force of 0.525 N, what are the magnitudes of the charges? Choose two answers. A. 15 µC and -35 µCB. -15 µC and 35 µCC. 40…
(a) Compute the electrical energy used by a household whose monthly electrical bill is $43, computed at the rate of $0.05 per kWh.(b) How long could this energy be used to burn ten 60 W light bulbs?(c) If this energy were used to raise a car of mass 1985 kg, to what height would the car be raised?
A hydroelectric power facility converts the gravitational potential energy of water behind a dam to electric energy. (For each answer, enter a number.) (a) What is the gravitational potential energy (in J) relative to the generators of a lake of volume 35.0 km³ (mass = 3.50 x 10¹3 kg), given that the lake has an average height of 30.0 m above the generators? X J (b) Compare this with the energy stored in a 9-megaton fusion bomb. Elake/bomb X
(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle e with respect to the horizontal. The coefficient of kinetic friction between block and table is u. Is the force exerted by friction equal to u, mg? If not, what is the force exerted by friction? (Assume 0 is measured above the horizontal.) This answer has not been graded yet. (b) How much work is done by the friction force and by F? (Don't forget the signs. Use the following as necessary: F for the magnitude of F, g, m, x, 0 and u,) WE = (c) Identify all the forces that do no work on the block. (Select all that apply.) O friction f OF Cos(e) OF sin(0) O mE (d) Let m = 2.00 kg, x = 4.50 m, 0 = 3.7°, F = 14.5 N, and u, = 0.400, and find the answers to parts (a) and (b). (Include appropriate signs.) We = W =
(1) Suppose you lift a stone that has a mass of 5.1 kilograms off the floor onto a shelf that is 2.5 meters high. How much work have you done? 124.95 Joules (2) Suppose you lift a laptop that weighs 5.3 pounds off the floor onto a shelf that is 2 feet high. How much work have you done? 347.68 x foot-pounds (3) The force on a particle is described by 6x work done in moving the particle from the origin to x = 9. - 2 pounds at a point r feet along the r-axis. Find the 9823.5 Vo foot-pounds
A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let gravitational potential energy be zero at ground level. a)Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g. b)Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground - Utop). c)What is the child's final speed, vf in m/s?
A 9.00-kg particle moves from the origin to position ©, having coordinates x = 4.50 m and y = 4.50 m as shown in the figure. One force on the particle is the gravitational force acting in the negative y direction. Using the equation (W = FAr cos e = F . Ař), calculate the work done by the gravitational force in going from O to © along the following paths. у (m) C) (x, y) х (m) (a) the purple path (o0© (b) the red path (OB© (c) the blue path (O© (d) Your results should all be identical. Why?
A car with mass 1520 kg is traveling down the highway at a speed of 18 m/s when the driver slams on the brakes due to an accident up ahead. The car eventually comes to rest.According to the work-energy theorem the work is related to the change in kinetic energy, Wnet = Δ KE = KEfinal - KEinitial.(a) Using the work-energy relationship, determine how much net work is done on the car from the brakes? Report the magnitude of the the work (positive value) even though the work from brakes will be negative since the car is slowing down._____ J(b) The brakes apply a force of 24000 N to the car in order to make it stop. Using the fact that W = F d and the fact that the you found the work done (magnitude) by the brakes in part (b), determine the stopping distance, d, of the car.____ m
You are meeting your friends at a 49er football game. You start near the top of the seating area (8.9 m above the field) and walk down the steps to where your friends are sitting (3.4 m above the field). Assume that your mass is 60 kg. What is the change in your gravitational potential energy as you walk down the steps? Give your answer in J and report your answer to 1 decimal place. Make sure you include the sign if that is important for your answer.
A mountain climber is about to haul up a 90-m length of hanging rope. How much work will it take if the rope weighs 0.65 N/m? Set up the integral that gives the work done. (Type an exact answer, using radicals as needed.)
A child of mass m = 27 kg slides down a slide of height h = 2.1 m without friction. Let gravitational potential energy be zero at ground level. Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g. Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground- Utop). What is the child's final speed, vf in m/s?
a) What is the kinetic energy in joules of a 970-kg automobile traveling at 72 km/h? (b) How much work would have to be done to bring a 970-kg automobile traveling at 72 km/h to a stop?