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A certain refrigerator requires 31.0 J of work to remove 150 J of heat from its...

A certain refrigerator requires 31.0 J of work to remove 150 J of heat from its interior. 1) What is its coefficient of performance? (Express your answer to two significant figures.) 2) How much heat is ejected to the surroundings at 21.0∘C? (Express your answer to two significant figures.) in J 3) If the refrigerator cycle is reversible, what is the temperature inside the refrigerator? (Express your answer to two significant figures.) in∘C

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