PHYSICAL SCIENCE (LCPO)
12th Edition
ISBN: 9781265774660
Author: Tillery
Publisher: MCG
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Question
Chapter 3, Problem 9PEA
(a)
To determine
The work done on the bookcase.
(b)
To determine
Change in gravitational potential energy.
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Chapter 3 Solutions
PHYSICAL SCIENCE (LCPO)
Ch. 3 - According to the definition of mechanical work,...Ch. 3 -
2. The metric unit of a joule (J) is a unit of...Ch. 3 -
3. A N m/s is a unit of...Ch. 3 - Prob. 4ACCh. 3 - Prob. 5ACCh. 3 -
6. A power rating of 1 joule per s is known as a...Ch. 3 -
7. According to PE = mgh, gravitational potential...Ch. 3 -
8. Two cars have the same mass, but one is moving...Ch. 3 - Prob. 9ACCh. 3 -
10. Potential energy and kinetic energy are...
Ch. 3 -
11. Many forms of energy in use today can be...Ch. 3 -
12. In all of our energy uses, we find that...Ch. 3 - Prob. 13ACCh. 3 - Prob. 14ACCh. 3 - Prob. 15ACCh. 3 -
16. The amount of energy generated by...Ch. 3 - Prob. 17ACCh. 3 - Prob. 18ACCh. 3 -
19. A renewable energy source is...Ch. 3 - Prob. 20ACCh. 3 - Prob. 21ACCh. 3 -
22. Which quantity has the greatest influence on...Ch. 3 - Prob. 23ACCh. 3 -
24. Most all energy comes to and leaves Earth in...Ch. 3 -
25. A spring-loaded paper clamp exerts a force of...Ch. 3 -
26. The force exerted when doing work by lifting...Ch. 3 -
27. The work accomplished by lifting an object...Ch. 3 -
28. An iron cannonball and a bowling ball are...Ch. 3 -
29. Two students are poised to dive off...Ch. 3 -
30. A car is moving straight down a highway. What...Ch. 3 - 31. Two identical cars are moving straight down a...Ch. 3 - Prob. 32ACCh. 3 - Prob. 33ACCh. 3 -
34. Today, the basic problem with using solar...Ch. 3 - Prob. 35ACCh. 3 -
36. Petroleum is believed to have formed over...Ch. 3 -
1. How is work related to energy?
Ch. 3 -
2. What is the relationship between the work done...Ch. 3 - Does a person standing motionless in the aisle of...Ch. 3 - Prob. 4QFTCh. 3 -
5. Is a kWh a unit of work, energy, power, or...Ch. 3 -
6. If energy cannot be destroyed, why do some...Ch. 3 -
7. A spring damp exerts a force on a stack of...Ch. 3 -
8. Why are petroleum, natural gas, and coal...Ch. 3 -
9. From time to time, people claim to have...Ch. 3 -
10. Define a joule. What is the difference...Ch. 3 -
11. Compare the energy needed to raise a mass 10...Ch. 3 -
12. What happens to the kinetic energy of a...Ch. 3 -
l. Evaluate the requirement that something must...Ch. 3 -
2. What are the significant similarities and...Ch. 3 -
3. Whenever you do work on something, you give it...Ch. 3 -
4. Simple machines are useful because they are...Ch. 3 -
5. Use the equation for kinetic energy to prove...Ch. 3 -
6. Describe at least several examples of negative...Ch. 3 -
7. The forms of energy are the result of...Ch. 3 -
8. Most technological devices convert one of the...Ch. 3 -
9. Are there any contradictions to the law of...Ch. 3 - A force of 200 N is needed to push a table across...Ch. 3 - Prob. 2PEACh. 3 - How much work is done in raising a 10.0 kg...Ch. 3 - Prob. 4PEACh. 3 - Prob. 5PEACh. 3 - Prob. 6PEACh. 3 - Prob. 7PEACh. 3 - Prob. 8PEACh. 3 - Prob. 9PEACh. 3 - Prob. 10PEACh. 3 - Prob. 11PEACh. 3 - Prob. 12PEACh. 3 - Prob. 13PEACh. 3 - Prob. 14PEACh. 3 - Prob. 15PEACh. 3 - Prob. 16PEACh. 3 - Prob. 17PEACh. 3 - Prob. 18PEACh. 3 - Prob. 19PEACh. 3 - Prob. 20PEACh. 3 -
1. How much work is done when a force of 800.0 N...Ch. 3 -
2. A force of 400.0 N is exerted on a 1,250 N car...Ch. 3 -
3. A 5.0 kg textbook is raised a distance of 30.0...Ch. 3 -
4. An electric hoist does 196,000 J of work in...Ch. 3 -
5. What is the horsepower of a 1,500.0 kg car...Ch. 3 -
6. (a) How many horsepower is a 250 W lightbulb?...Ch. 3 -
7. What is the kinetic energy of a 30–gram bullet...Ch. 3 -
8. How much work will be done by a 30–gram bullet...Ch. 3 -
9. A force of 50.0 lb is used to push a box 10.0...Ch. 3 -
10. (a) How much work is done in raising a 50.0...Ch. 3 -
11. What is the kinetic energy in J of a 60.0 g...Ch. 3 -
12. (a) What is the kinetic energy of a 1,500.0...Ch. 3 -
13. The driver of an 800.0 kg car decides to...Ch. 3 -
14. Compare the kinetic energy of an 800.0 kg car...Ch. 3 -
15. A 175.0 lb hiker is able to ascend a 1,980.0...Ch. 3 -
16. (a) How many seconds will it take a 10.0 hp...Ch. 3 -
17. A ball is dropped from 20.0 ft above the...Ch. 3 -
18. What is the velocity of a 60.0 kg jogger with...Ch. 3 -
19. A small sports car and a pickup truck start...Ch. 3 -
20. A 70.0 kg student runs up the stairs of a...
Knowledge Booster
Similar questions
- Cite two examples in which a force is exerted on an object without doing any work on the object.arrow_forwardA mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance?arrow_forwardA particle of mass 2.0 kg moves under the influence of the force F(x)=(3/x)N. If its speed at x=2.0 m is v=6.0 m/s, what is its speed at x = 7.0 m?arrow_forward
- A rope having a total mass of 0.4 kg and total length 4 m has 0.6 m of the rope hanging vertically down off a work bench. How much work must be done to place all the rope on the bench?arrow_forwardWhat is the dominant factor that affects the speed of an object that started from rest down a frictionless incline if the only work done on the object is from gravitational forces?arrow_forwardA 0.20-kg ball is thrown upward. How much work is done on the ball by gravity as the ball rises between heights of 2.0 m and 3.0 m?arrow_forward
- The surface of the preceding problem is modified so that the coefficient of kinetic friction is decreased. The same horizontal force is applied to the crate, and after being pushed 8.0 m, its speed is 5.0 m/s. How much work is now done by the force of friction? Assume that the crate starts at rest.arrow_forwardKEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4. energy (4.2) 5. kinetic energy 6. potential energy 7. gravitational potential energy 8. conservation of total energy (4.3) 9. conservation of mechanical energy 10. power (4.4) 11. watt 12. horsepower 13. kilowatt-hour 14. alternative energy sources (4.6) 15. renewable energy sources For each of the following items, fill in the number of the appropriate Key Term from the preceding list. o. _____ The ability to do workarrow_forwardA particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N . Suppose a frictional force also acts on the particle. If the particle’s speed when it starts at x=4.0 m is 0.0 m/s and when it arrives at x=4.0 m is 9.0 m/s, how much work is done on it by the frictional force between x=4.0 m and x=4.0 m?arrow_forward
- As a young man, Tarzan climbed up a vine to reach his tree house. As he got older, he decided to build and use a staircase instead. Since the work of the gravitational force mg is path Independent, what did the King of the Apes gain in using stairs?arrow_forwardA 537-kg trailer is hitched to a truck. Find the work done by the truck on the trailer in each of the following cases. Assume rolling friction is negligible. a. The trailer is pulled at constant speed along a level road for 2.30 km. b. The trailer is accelerated from rest to a speed of 88.8 km/h. c. The trailer is pulled at constant speed along a road inclined at 12.5 for 2.30 km.arrow_forwardA boy throws a ball of mass 0.25 kg straight upward with an initial speed of 20 m/s When the ball returns the boy, its speed is 17 m/s How much much work does air resistance do on the ball during its flight?arrow_forward
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