I Review ConstantsTwo tugboats pull a disabled supertanker. Each tugexerts a constant force of 1.90x106 N , one at anangle 12.0 ° west of north, and the other at anangle 12.0 ° east of north, as they pull the tanker adistance 0.630 km toward the north.Part AWhat is the total work done by the two tugboats on the supertanker?Express your answer in joules, to three significant figures.• View Available Hint(s)JSubmit

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Answered: I Review | Constants wo tugboats pull a…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 29P

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A 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?
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Give 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.

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