During each cycle of operation,a refrigerator absorbs 230 J of heat from the freezer and expels 356 J of heat to the room.How much work input is required in each cycle?
A)712 J
B)586 J
C)460 J
D)126 J

Question

Quizplus · Accepted Answer

The work input required for each cycle of a refrigerator can be calculated using the first law of thermodynamics, which states that the change in the internal energy of a system is equal to the heat added to the system minus the work done by the system. In the context of a refrigerator, the work input is equal to the heat expelled to the room minus the heat absorbed from the freezer. Therefore, the work input is 356 J - 230 J = 126 J.

During Each Cycle of Operation,a Refrigerator Absorbs 230 J of Heat