(Solved by Humans)-A household refrigerator that has a power input of 450 W and a
Question
A household refrigerator that has a power input of 450 W and a COP of 2.5 is tocool five large watermelons, 10 kg each, to 8?C. If the watermelons are initially at 20?C,determine how long it will take for the refrigerator to cool them. The watermelons canbe treated as water whose specific heat is 4.2 kJ/kg ? ?C. Is your answer realistic oroptimistic? Explain
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