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Refrigerators: a Refrigerator Has a Coefficient of Performance Equal to 4.2

Question 24

Multiple Choice

Refrigerators: A refrigerator has a coefficient of performance equal to 4.2. How much work must be done on the refrigerator in order to remove 250 J of heat from the interior?


A) 60 J
B) 120 J
C) 250 J
D) 480 J
E) 1050 J

Correct Answer:

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