Multiple Choice
A reversible engine takes in 40. Joules of heat, does 10. J of work, and expels 30. J of wasted heat during each cycle. If it is operated in reverse as a refrigerator, then its COP would be
A) 75%.
B) 25%.
C) 4.
D) 3.
E) 4%.
Correct Answer:

Verified
Correct Answer:
Verified
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