Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 3, Problem 20CQ
To determine
The technological device that does not convert a form of energy to another.
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Your friend wants to solve the world's energy problem by inventing a device that will deliver 10 times more energy than is put into the device.
Can this device work? Explain.
Write your name and date. This problem should be solved using the principles of Energy Conservation found in Chapter 3.
Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held at rest 10 meters above the ground.
The baseball is released. Under the influence of gravity on Earth, it freefalls to the ground. Assuming the air resistance is negligible, write the kinetic, potential and total energy of the baseball at the instant when the baseball hits the earth.
What is the baseball’s final speed when it impacts the ground using the principles of Energy Conservation?
I need help with this question and answering all the steps
Calculate the minimum amount of work needed to move a 500-kg rocket payload from Earth's surface to the ISS in orbit 400,000m above Earth's surface.
Draw a sketch of the situation, labeling all of the physical quantities given in the problem. Identify your system in the sketch. Make sure both the initial and final states are represented in your sketch. Be sure to include all values you need to look up (such as the mass of Earth) in your sketch.
Draw a work-energy bar chart for this process. Take the rocket at rest on Earth's surface as your initial state and when the rocket is at rest at the ISS.
Solve for the minimum amount of work needed to move the payload to the ISS. Start with general equations and explain what you are doing and why you did what you did.
Evaluate your solution. Describe how you evaluated your answer and whether or not you think your answer is reasonable.
Chapter 3 Solutions
Integrated Science
Ch. 3.1 - The metric unit of a joule (J) is a unit of a....Ch. 3.1 - Prob. 2SCCh. 3.1 - Prob. 3SCCh. 3.1 - About how many watts are equivalent to 1...Ch. 3.1 - A kilowatt-hour is a unit of a. power. b. work. c....Ch. 3.2 - The potential energy of a book on a shelf,...Ch. 3.2 - Prob. 7SCCh. 3.2 - Prob. 8SCCh. 3.3 - Prob. 9SCCh. 3.3 - Prob. 10SC
Ch. 3.4 - The accounting device of a barrel of oil is...Ch. 3.4 - The most widely used source of energy today is a....Ch. 3 - How is work related to energy?Ch. 3 - Prob. 2CQCh. 3 - Prob. 3CQCh. 3 - Prob. 4CQCh. 3 - Prob. 5CQCh. 3 - Prob. 6CQCh. 3 - Prob. 7CQCh. 3 - Prob. 8CQCh. 3 - Prob. 9CQCh. 3 - Prob. 10CQCh. 3 - Prob. 11CQCh. 3 - Prob. 12CQCh. 3 - Prob. 13CQCh. 3 - Prob. 14CQCh. 3 - Prob. 15CQCh. 3 - Prob. 16CQCh. 3 - Prob. 17CQCh. 3 - Prob. 18CQCh. 3 - Prob. 19CQCh. 3 - Prob. 20CQCh. 3 - Prob. 21CQCh. 3 - A force of 200 N is needed to push a table across...Ch. 3 - Prob. 2PEACh. 3 - Prob. 3PEACh. 3 - Prob. 4PEACh. 3 - Prob. 5PEACh. 3 - Prob. 6PEACh. 3 - Prob. 7PEACh. 3 - Prob. 8PEACh. 3 - Prob. 9PEACh. 3 - (a) How much work is done in moving a 2.0 kg book...Ch. 3 - Prob. 11PEACh. 3 - Prob. 12PEACh. 3 - Work of 1,200 J is done while pushing a crate...Ch. 3 - How much work is done by a hammer that exerts a...Ch. 3 - A 5.0 kg textbook is raised a distance of 30.0 cm...Ch. 3 - An electric hoist does 196,000 J of work in...Ch. 3 - What is the horsepower of a 1,500.0 kg car that...Ch. 3 - What is the kinetic energy of a 30.0 g bullet that...Ch. 3 - How much work will be done by a 30.0 g bullet...Ch. 3 - A 10.0 kg box is lifted 15 m above the ground by a...Ch. 3 - A force of 50.0 lb is used to push a box 10.0 ft...Ch. 3 - Prob. 10PEBCh. 3 - Prob. 11PEBCh. 3 - A 70.0 kg student runs up the stairs of a football...
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- Give an example of something we think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this is accomplished without doing work.arrow_forwardConsider the energy transfers and transformations listed below in parts (a) through (e). For each part, (i) describe human-made devices designed to produce each of the energy transfers or transformations and, (ii) whenever possible, describe a natural process in which the energy transfer or transformation occurs. Give details to defend your choices, such as identifying the system and identifying other output energy if the device or natural process has limited efficiency. (a) Chemical potential energy transforms into internal energy. (b) Energy transferred by electrical transmission becomes gravitational potential energy. (c) Elastic potential energy transfers out of a system by heat. (d) Energy transferred by mechanical waves does work on a system. (e) Energy carried by electromagnetic waves becomes kinetic energy in a system.arrow_forwardWhat do we pay the electric company for, power or energy? In what units?arrow_forward
- Integrated Concepts A 105-kg basketball player crouches down 0.400 m while waiting to jump. After exerting a force on the floor through this 0.400 m, his feet leave the floor and his center of gravity rises 0.950 m above its normal standing erect position. (a) Using energy considerations, calculate his velocity when he leaves the floor. (b) What average force did he exert on the floor? (Do not neglect the force to support his weight as well as that to accelerate him.) (c) What was his power output during the acceleration phase?arrow_forwardIf the energy in fusion bombs were used to supply the energy needs of the world, how many of the 9-megaton variety would be needed for a year’s supply of energy (using data from Equation 8.7)? U(x)=12kx2=const.arrow_forwardIntegrated Concepts A 75.0-kg cross-country skier is climbing a 3.0° slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert backward on the snow to accomplish this? (c) If he continues to exert this force and to experience the same air resistance when he reaches a level area, how long will it take him to reach a velocity of 10.0 m/s?arrow_forward
- Give an example of something think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this without doing work.arrow_forwardAnswer yes or no to each of the following questions. (a) Can an objectEarth system have kinetic energy and not gravitational potential energy? (b) Can it have gravitational potential energy and not kinetic energy? (c) Can it have both types of energy at the same moment? (d) Can it have neither?arrow_forwardIntegrated Concepts (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2 against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?arrow_forward
- What average power is generated by a 70.0-kg mountain climber who climbs a summit of height 325 m in 95.0 min? (a) 39.1 W (b) 54.6 W (c) 25.5 W (d) 67.0 W (e) 88.4 Warrow_forwardGive an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.arrow_forwardRank the following quantities of energy from largest to the smallest. State if any are equal. (a) the absolute value of the average potential energy of the SunEarth system (b) the average kinetic energy of the Earth in its orbital motion relative to the Sun (c) the absolute value of the total energy of the SunEarth systemarrow_forward
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