A refrigerator has a coefficient of performance of 4.0.When removing 2.4 x 10⁴ J from inside the refrigerator,how much energy is sent into the environment?

Question

Quizplus · Accepted Answer

The coefficient of performance (COP) is defined as the ratio of the heat removed from the refrigerator (Qc) to the work input (W). COP = Qc/W. Given COP = 4.0 and Qc = 2.4 x 10^4 J, we can find W = Qc/COP = 2.4 x 10^4 J / 4.0 = 0.6 x 10^4 J. The energy sent into the environment is the sum of Qc and W, which is 2.4 x 10^4 J + 0.6 x 10^4 J = 3.0 x 10^4 J.

A Refrigerator Has a Coefficient of Performance of 4