×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide

snow can be extremely taxing because the arms have such a

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 51PE Chapter 7

Physics: Principles with Applications | 6th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

4 5 0 237 Reviews
15
2
Problem 51PE

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-by-step solution Step 1 of 7 The formula to find the efficiency is, Here is the efficiency, is the output power and is the input power. Step 2 of 7 (a) Use the above formula to find the power output, Step 3 of 7 Substitute for and for . Therefore, the power output is . Step 4 of 7 (b) Use the above formula to find the time, Here is the height, is the mass of the snow.

Step 5 of 7

Chapter 7, Problem 51PE is Solved
Step 6 of 7

Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

snow can be extremely taxing because the arms have such a

×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide
×
Reset your password