Answer
$X_2=6.75 ft$
Work Step by Step
We set up a ratio:
$ \frac{x_1}{k_1}= \frac{x_2}{k_2}$
We plug in the values for the thermal conductivity of Styrofoam and concrete. Using this, we find the answer:
$X_2=6.75 ft$
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 16 - Section 16.4 - Exercises and Problems - Page 299: 32
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