Question

During one cycle, a refrigerator removes 500 J from a cold reservoir and discharges 800 J to its hot reservoir. (a) What is its coefficient of performance? (b) How much work per cycle does it require to operate?

Answer 1

a)COP = 1.67

b) W = 300 J

Step-by-step explanation:

given,

refrigerator removes = 500 J from a cold reservoir

discharge = 800 J to its hot reservoir

a) COP =
`(Q)/(w)`

COP =
`(500)/(800-500)`

COP = 1.67

b) heat per cycle exhausted to the

W + 500 = 800

W = 800- 500

W = 300 J