Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 3, Problem 5PEA
(a)
To determine
The power developed by student in watts.
(b)
To determine
The power developed by student in horsepower.
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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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- (a) What is the power output in watts and horsepower of a 70.0-kg sprinter who accelerates from rest to 10.0 m/s in 3.00 s? (b) Considering the amount of power generated, do you think a well-trained athlete could do this repetitively for long periods of time?arrow_forwardA person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?arrow_forwardA sled of mass 70 kg starts from rest and slides down a 10 incline 80 m long. It then travels for 20 m horizontally before starting back up an 8° incline. It travels 80 m along this incline before coming to rest. What is the magnitude of the net work done on the sled by friction?arrow_forward
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- A student expends 7.5 W of power in lifting a textbook 0.50 m in 1.0 s with a constant velocity. (a) How much work is done, and (b) how much does the book weigh (in newtons)? The answers to Confidence Exercises may be found at the back of the book.arrow_forwardAs 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_forward. In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft. In 2003, Australian Paul Crake completed the race in a record time of 9 min and 33 S, Mr., Crake weighed 143 lb (65 kg) , (a) How much work did Mr., Crake do in reaching the top of the building? (b) What was his average power output (in ft-lb/s and in hp)?arrow_forward
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