A Vessel Containing 5

Multiple Choice

A vessel containing 5.0 kg of water at 10°C is put into a refrigerator. The 1/7 HP motor (1 HP = 746 W) runs for 5.0 minutes to cool the liquid to the refrigerator's low temperature, 0°C. What is the COP of the refrigerator?

A) 5.7
B) 4.6
C) 6.5
D) 7.2
E) 3.6