1. The problem statement, all variables and given/known data 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? 2. Relevant equations K=TC/(TH-TC) QH = QC + Win 3. 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!