Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 15 - The Laws of Thermodynamics - Problems - Page 439: 14

Answer

$1.52\times10^7J$

Work Step by Step

In the worked-out example, the total energy “burned” was $1.15\times10^7J$. Subtract the energy for an hour of desk work, and add the energy for an hour of running. $$E=1.15\times10^7J-(115J/s)(3600s)+(1150J/s)(3600s)=1.52\times10^7J$$
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