Pearson eText for College Physics: Expl...2nd EditionEugenia Etkina, Gorazd Planinsic Publisher: PEARSON+ISBN: 9780137443000
Pearson eText for College Physics: Expl...
Solutions for Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+)
Problem 1RQ:
Review Question 7.1 Assuming that Earths orbit around the Sun is circular, what information do you...Problem 3RQ:
Review Question 7.3 When we use the work-energy equation, how do we incorporate the force that Earth...Problem 4RQ:
Review Question 7.4 If the magnitude of the force exerted by a spring on an object is kx, why is it...Problem 5RQ:
Review Question 7.5 Why, when friction cannot be neglected, is it useful to include both surfaces in...Problem 6RQ:
Review Question 7.6 What would change in the solution to the problem in Example 7.8 if we did not...Problem 7RQ:
Review Question 7.7 Imagine that a collision occurs. You measure the masses of the two objects...Problem 8RQ:
Review Question 7.8 Toyota says that the power of their Prius car is 121 hp. What does this number...Problem 9RQ:
Review Question 7.9 In this section you read that the gravitational potential energy of two large...Problem 1MCQ:
In which of the following is positive work done by a person on a suitcase? a. The person holds a...Problem 2MCQ:
2. Which answer best represents the system’s change in energy for the following process? The system...Problem 3MCQ:
An Atwood machine is shown in Figure Q7.3. As the blocks are released and block 1 moves downward,...Problem 5MCQ:
5. Three processes are described below. Choose one process in which there is work done on the...Problem 6MCQ:
6. Choose which statement describes a process in which an external force does negative work on the...Problem 7MCQ:
7. Which example(s) below involve(s) zero physics work? Choose all that apply.
a. A person holds a...Problem 8MCQ:
8. Estimate the change in gravitational potential energy when you rise from bed to a standing...Problem 9MCQ:
What does it mean if object 1 does +10 J of work on object 2? a. Object 1 exerts a 10-N force on...Problem 10MCQ:
You pull on a spring, which obeys Hookes law, in two steps. In step 1, you extend it by distance xs....Problem 11MCQ:
The graph in Figure Q7.11 shows the time dependence of the vertical displacement of a lead ball with...Problem 12MCQ:
12. A 1400-kg car is traveling on a level road at a constant speed of 60 mi/h. The drag force...Problem 14MCQ:
Two clay balls are moving toward each other. The balls have equal kinetic energies (K1=K2), but ball...Problem 15CQ:
15. Is energy a physical phenomenon, a model, or a physical quantity? Explain your answer.
Problem 16CQ:
16. Your friend thinks that the escape speed should be greater for more massive objects than for...Problem 17CQ:
Suggest how you can measure the following quantities: the power of a motor, the kinetic energy of a...Problem 18CQ:
How can satellites stay in orbit without any jet propulsion system? Explain using work-energy ideas.Problem 19CQ:
Why does the Moon have no atmosphere, but Earth does?Problem 21CQ:
21. In the equation , the gravitational potential energy is directly proportional to the distance of...Problem 22CQ:
22. You push a small cart by exerting a constant force F along a table. After you push the cart a...Problem 1P:
1. Jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. He holds...Problem 2P:
2. You have a 15-kg suitcase and (a) slowly lift it 0.80 m upward, (b) hold it at rest to test...Problem 3P:
* You use a rope to slowly pull a sled and its passenger 50 m up a 20 incline, exerting a 150-N...Problem 4P:
A rope attached to a truck pulls a 180-kg motorcycle at 9.0 m/s. The rope exerts a 400-N force on...Problem 5P:
5. You lift a 25-kg child 0.80 m, slowly carry him 10 m to the playroom, and finally set him back...Problem 6P:
A truck runs into a pile of sand, moving 0.80 m as it slows to a stop. The magnitude of the work...Problem 7P:
7. A 0.50-kg block is placed in a straight gutter that allows the block to move only along the...Problem 8P:
s up a smooth incline, which makes an angle with the horizontal. (a) Derive an expression for the...Problem 9P:
9. ** It is a windy day. You are moving a 20-kg box at a constant speed over 10 m by pulling a rope...Problem 10P:
A 5.0-kg rabbit and a 12-kg Irish setter have the same kinetic energy. If the setter is running at...Problem 12P:
* A pickup truck (2268 kg) and a compact car (1100 kg) have the same momentum. (a) What is the ratio...Problem 13P:
* When does the kinetic energy of a car change more: when the car accelerates from 0 to 10 m/s or...Problem 14P:
* When exiting the highway, a 1100-kg car is traveling at 22 m/s. The cars kinetic energy decreases...Problem 16P:
16. * Flea jump flea pushes off a surface by extending its rear legs for a distance of slightly...Problem 17P:
* Roller coaster ride A roller coaster car drops a maximum vertical distance of 35.4 m. (a)...Problem 18P:
18. * BIO EST Heart pumps blood The heart does about 1 J of work while pumping blood into the aorta...Problem 19P:
19. * Wind energy Air circulates across Earth in regular patterns. A tropical air current called the...Problem 20P:
20. * BIO Bone break The tibia bone in the lower leg of an adult human will break if the compressive...Problem 21P:
21. * BIO EST Climbing Mt. Everest In 1953 Sir Edmund Hillary and Tenzing Norgay made the first...Problem 22P:
22. A door spring is difficult to stretch. (a) What maximum force do you need to exert on a relaxed...Problem 23P:
* A moving car has 40,000 J of kinetic energy while moving at a speed of 7.0 m/s. A spring-loaded...Problem 24P:
24. * The force required to stretch a slingshot by different amounts is shown in the graph in Figure...Problem 25P:
Jim is driving a 2268-kg pickup truck at 20 m/s and releases his foot from the accelerator pedal....Problem 26P:
26. * A car skids 18 m on a level road while trying to stop before hitting a stopped car in front of...Problem 27P:
s mass is m. An average friction force of magnitude f opposes her motion. She starts down the slide...Problem 30P:
30. In a popular new hockey game, the players use small launchers with springs to move the 0.0030-kg...Problem 31P:
31. The top of a descending ski slope is 50 m higher than the bottom of the slope. A 60-kg skier...Problem 32P:
* If 20% of the gravitational potential energy change of the skier in the previous problem is...Problem 34P:
34. A driver loses control of a car, drives off an embankment, and lands in a canyon 6.0 m below....Problem 35P:
* You are pulling a box so it moves at increasing speed. Compare the work you need to do to...Problem 36P:
s speed increases from zero to 4.0 m/s in a vertical distance of 6.0 m. What is the force that the...Problem 37P:
37. ** EST Hit by a hailstone A 0.030-kg hailstone the size of a golf ball (4.3 cm in diameter) is...Problem 38P:
38. * BIO Froghopper jump Froghoppers may be the insect jumping champs. These 6-mm-long bugs can...Problem 39P:
39. * Bar chart Jeopardy 1 Describe in words and with a sketch a process that is consistent with the...Problem 40P:
* Bar chart Jeopardy 2 Describe in words and with a sketch a process that is consistent with the...Problem 41P:
41. * Equation Jeopardy 1 Construct a qualitative work-energy bar chart for a process that is...Problem 42P:
* Equation Jeopardy 2 Construct a qualitative work-energy bar chart for a process that is consistent...Problem 44P:
44. * Evaluation 2 Your friend provides a solution to the following problem. Evaluate her solution....Problem 45P:
45. A crab climbs up a vertical rock with a constant speed. Students Iris and Alden represent this...Problem 46P:
46 * Work-energy bar charts for a person going downstairs and upstairs are shown in Figure P7.46 ....Problem 48P:
* A 1060-kg car moving west at 16 m/s collides with and locks onto a 1830-kg stationary car. (a)...Problem 49P:
* You fire an 80-g arrow so that it is moving at 80 m/s when it hits and embeds in a 10-kg block...Problem 50P:
50. * You fire a 50-g arrow that moves at an unknown speed. It hits and embeds in a 350-g block that...Problem 51P:
* To confirm the results of Problem 7.50, you try a new experiment. The 50-g arrow is launched in an...Problem 52P:
52. * Somebody tells you that Figure P7.52 shows a displacement-versus-time graph of two carts on a...Problem 54P:
54. A roofing shingle elevator is lifting a 10.0-kg package to the top of a building at constant...Problem 55P:
55. (a) What is the power involved in lifting a 1.0-kg object 1.0 m in 1.0 s? (b) While lifting a...Problem 56P:
* A fire engine must lift 30 kg of water a vertical distance of 20 m each second. What is the amount...Problem 57P:
* BIO Internal energy change while biking You set your stationary bike on a high 80-N friction-like...Problem 58P:
* Climbing Mt. Mitchell An 82-kg hiker climbs to the summit of Mount Mitchell in western North...Problem 59P:
* BIO EST Sears stair climb The fastest time for the Sears Tower (now Willis Tower) stair climb (103...Problem 60P:
* BIO EST Exercising so you can eat ice cream You curl a 5.5-kg (12 lb) dumbbell that is hanging...Problem 61P:
61. ** BIO Salmon move upstream In the past, salmon would swim more than 1130 km (700 mi) to spawn...Problem 62P:
* EST Estimate the maximum horsepower of the process of raising your body mass as fast as possible...Problem 64P:
At what distance from Earth is the gravitational potential energy of a spaceship- Earth system...Problem 65P:
65. * Possible escape of different air molecule types (a) Determine the ratio of escape speeds from...Problem 67P:
Determine the escape speed for an object to leave the solar system if it starts at Earths distance...Problem 68P:
If the Sun were to become a black hole, how much would it increase the gravitational potential...Problem 69P:
* A satellite moves in elliptical orbit around Earth, which is one of the foci of the elliptical...Problem 70P:
70. * Determine the maximum radius Earth's Moon would have to have in order for it to be a black...Problem 71GP:
71. You throw a clay ball vertically upward. The ball hits the ceiling and sticks to it. Let the...Problem 74GP:
74 * EST A “gravity force car” is powered by the force exerted by Earth on an object of mass M. The...Problem 75GP:
* Loop the loop You are given a loop raceway for your Hot Wheels cars (as shown in Figure P7.75)....Problem 76GP:
76. ** Atwood machine Two blocks of masses hang at the ends of a string that passes over a very...Problem 77GP:
andm2 are connected with a string that passes over a very light pulley (see Figure P7.77). Friction...Problem 78GP:
of all species became extinct, ending the reign of dinosaurs and opening the way for mammals to...Problem 79GP:
s cradle is a toy that consists of several metal balls touching each other and suspended on strings...Problem 81GP:
81. ** Six Flags roller coaster A loop-the-loop on the Six Flags Shockwave roller coaster has a 10-m...Problem 82GP:
** Designing a ride You are asked to help design a new type of loop-the-loop ride. Instead of...Problem 83RPP:
BIO Metabolic rate Energy for our activities is provided by the chemical energy of the foods we eat....Problem 84RPP:
BIO Metabolic rate Energy for our activities is provided by the chemical energy of the foods we eat....Problem 85RPP:
BIO Metabolic rate Energy for our activities is provided by the chemical energy of the foods we eat....Problem 86RPP:
BIO Metabolic rate Energy for our activities is provided by the chemical energy of the foods we eat....Problem 87RPP:
BIO Metabolic rate Energy for our activities is provided by the chemical energy of the foods we eat....Problem 89RPP:
BIO Kangaroo hopping Hopping is an efficient method of locomotion for the kangaroo (see Figure...Problem 90RPP:
BIO Kangaroo hopping Hopping is an efficient method of locomotion for the kangaroo (see Figure 7.18...Problem 91RPP:
BIO Kangaroo hopping Hopping is an efficient method of locomotion for the kangaroo (see Figure...Problem 92RPP:
BIO Kangaroo hopping Hopping is an efficient method of locomotion for the kangaroo (see Figure...Browse All Chapters of This Textbook
Chapter 2 - Kinematics: Motion In One DimensionChapter 3 - Newtonian MechanicsChapter 4 - Applying Newton’s LawsChapter 5 - Circular MotionChapter 6 - Impulse And Linear MomentumChapter 7 - Work And EnergyChapter 8 - Extended Bodies At RestChapter 9 - Rotational MotionChapter 10 - Vibrational MotionChapter 11 - Mechanical Waves
Chapter 12 - GasesChapter 13 - Static FluidsChapter 14 - Fluids In MotionChapter 15 - First Law Of ThermodynamicsChapter 16 - Second Law Of ThermodynamicsChapter 17 - Electric Charge, Force, And EnergyChapter 18 - The Electric FieldChapter 19 - Dc CircuitsChapter 20 - MagnetismChapter 21 - Electromagnetic InductionChapter 22 - Reflection And RefractionChapter 23 - Mirrors And LensesChapter 24 - Wave OpticsChapter 25 - Electromagnetic WavesChapter 26 - Special RelativityChapter 27 - Quantum OpticsChapter 28 - Atomic PhysicsChapter 29 - Nuclear PhysicsChapter 30 - Particle Physics
Sample Solutions for this Textbook
We offer sample solutions for Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+) homework problems. See examples below:
Chapter 2, Problem 1RQChapter 3, Problem 1RQChapter 4, Problem 1RQChapter 5, Problem 1RQChapter 6, Problem 1RQChapter 7, Problem 1RQIntroduction: Center of mass is a point where the complete mass of any object is said to be...Chapter 9, Problem 1RQChapter 10, Problem 1RQ
Chapter 11, Problem 1RQIntroduction: The following mechanisms can be logically constructed to understand the reason behind...Chapter 13, Problem 1RQIntroduction: Bernoulli’s principle states that fluids moving at a faster velocity have lesser...Chapter 15, Problem 1RQIntroduction: Energy of an isolated system, such as the universe always remains constant, as stated...Chapter 17, Problem 1RQChapter 18, Problem 1RQChapter 19, Problem 1RQChapter 20, Problem 1RQChapter 21, Problem 1RQIntroduction: Experimentally, it has been observed that, the projection on the wall will be upside...Chapter 23, Problem 1RQChapter 24, Problem 1RQChapter 25, Problem 1RQChapter 26, Problem 1RQIntroduction: Planck’s hypothesis stated that an accelerated charged particle can radiate an...Introduction: The Rutherford atomic model is also known as the planetary or nuclear model of an...Introduction: Rutherford, in 1899, conducted an experiment in which he set up two parallel metal...Introduction: Beta decay is referred to as the transformation of protons into neutrons and...
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