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Shoveling snow can be extremely taxing because the arms

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 51PE Chapter 7

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 51PE

Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity. Suppose a person shoveling a footpath metabolizes food at the rate of 800 W. (a) What is her useful power output? (b) How long will it take her to lift 3000 kg of snow 1.20 m? (This could be the amount of heavy snow on 20 m of footpath.) (c) How much waste heat transfer in kilojoules will she generate in the process?

Step-by-Step Solution:

Step 1of 4

We have to find the output power, time and wasted energy during the heat transfer.

Step 2 of 4</p>

We have relation

We have to find , rearrange

The useful power output is

Step 3 of 4

Chapter 7, Problem 51PE is Solved
Step 4 of 4

Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

College Physics was written by and is associated to the ISBN: 9781938168000. This full solution covers the following key subjects: snow, footpath, shoveling, metabolizes, efficiency. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The full step-by-step solution to problem: 51PE from chapter: 7 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. This textbook survival guide was created for the textbook: College Physics , edition: 1. The answer to “Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity. Suppose a person shoveling a footpath metabolizes food at the rate of 800 W. (a) What is her useful power output? (b) How long will it take her to lift 3000 kg of snow 1.20 m? (This could be the amount of heavy snow on 20 m of footpath.) (c) How much waste heat transfer in kilojoules will she generate in the process?” is broken down into a number of easy to follow steps, and 80 words. Since the solution to 51PE from 7 chapter was answered, more than 372 students have viewed the full step-by-step answer.

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