- #1
j88k
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Homework Statement
The coefficient of performance of a refrigerator is 5.40. The compressor uses 30.0 J of energy per cycle.
a) How much heat energy is exhausted per cycle?
b) If the hot-reservoir temperature is 27.0C, what is the lowest possible temperature in C of the cold reservoir?
Homework Equations
K=TC/(TH-TC)
QH = QC + Win
The Attempt at a Solution
solved part a) and found the energy to be 192 J
i keep on getting part b) wrong though and I ran out of chances to try.
please help!