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Get Full Access to College Physics - 1 Edition - Chapter 7 - Problem 54pe
Get Full Access to College Physics - 1 Edition - Chapter 7 - Problem 54pe

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# Solved: (a) Calculate the energy in kJ used by a 55.0-kg ISBN: 9781938168000 42

## Solution for problem 54PE Chapter 7

College Physics | 1st Edition

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Problem 54PE

(a) Calculate the energy in kJ used by a 55.0-kg woman who does 50 deep knee bends in which her center of mass is lowered and raised 0.400 m. (She does work in both directions.) You may assume her efficiency is 20%. (b) What is the average power consumption rate in watts if she does this in 3.00 min?

Step-by-Step Solution:

Solution 54PE

Step 1

A woman is working and she has to bend her knee half, to do some work. Hence we have to calculate the energy. Given the mass of the women is 55 kg the efficiency of her work is 20% radius is 0.4m and time t is 3min.

Step 2 of 3

Step 3 of 3

##### ISBN: 9781938168000

This full solution covers the following key subjects: assume, average, bends, both, calculate. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The full step-by-step solution to problem: 54PE 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. College Physics was written by and is associated to the ISBN: 9781938168000. Since the solution to 54PE from 7 chapter was answered, more than 3209 students have viewed the full step-by-step answer. The answer to “(a) Calculate the energy in kJ used by a 55.0-kg woman who does 50 deep knee bends in which her center of mass is lowered and raised 0.400 m. (She does work in both directions.) You may assume her efficiency is 20%. (b) What is the average power consumption rate in watts if she does this in 3.00 min?” is broken down into a number of easy to follow steps, and 59 words.

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