Answer
6.5
Work Step by Step
The ideal/maximum coefficient of performance is given in equation 15–6c. Make sure to measure temperatures in kelvins.
$$COP_{ideal}=\frac{T_L}{T_H-T_L}$$
$$COP_{ideal}=\frac{(-8+273)K}{(33-(-8))K}=6.5$$
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 15 - The Laws of Thermodynamics - Problems - Page 440: 33
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