Answer
62%
Work Step by Step
In order to make a straight line, one should plot $\frac{T_h}{T_h-T_c}$ versus COP. Doing this in Microsoft excel, we find that the efficiency of the engine (compared to its maximum) is: 62 percent.
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 19 - Exercises and Problems - Page 351: 69
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