Answer
$26.25C^{\circ}$
Work Step by Step
The air temperature inside the box can be determined as follows:
$T=\frac{PL}{KA}+T_a$
We plug in the known values to obtain:
$T=\frac{100(0.012)}{(0.8)(6)(0.2)^2}+20$
$\implies T=26.25C^{\circ}$
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)
by Knight, Randall D.
Published by
Pearson
ISBN 10:
0321740904
ISBN 13:
978-0-32174-090-8
Chapter 17 - Work, Heat, and the First Law of Thermodynamics - Exercises and Problems - Page 500: 72
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