A refrigerator requires 10 J of work and exhausts 65 J of heat per cycle. What is the refrigerator's coefficient of performance

The refrigerator's coefficient of performance is 5.5.

Explanation:

Given;

work required, W = 10 J

heat exhausts per cycle, Q = 65 J

determine the energy removed from the cold reservoir, which is inside the refrigerator;

10 = 65 - Qc

Qc = 65 - 10

Qc = 55

The coefficient of performance of heat pump used for cooling id given by;

Therefore, the refrigerator's coefficient of performance is 5.5.

a skateboard rolling across the street - apex