Question

A refrigerator requires 20 J of work and exhausts 60 J of heat per cycle. What is the coefficient of performance?

Answer 1

The coefficient of performance (COP) of a refrigerator can be calculated using the formula: COP = heat removed from the cold reservoir / work input. In this case, the COP is 3.

Step-by-step explanation:

The coefficient of performance (COP) of a refrigerator can be calculated using the formula:

COP = heat removed from the cold reservoir / work input

In this case, the heat removed from the cold reservoir is 60 J and the work input is 20 J. So, the COP of the refrigerator is:
COP = 60 J / 20 J = 3