20J of heat energy is extracted from a cold reservoir when 30J of wor – McqOptions

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1.	20J of heat energy is extracted from a cold reservoir when 30J of work is done on a refrigerator. What is the coefficient of the refrigerator?
A.	2/3
B.	5/3
C.	3/5
D.	1/3
Answer» B. 5/3

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