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8. A refrigerator freezes 5 kg of water at O^° C into iceat 0^° C in a time interval of 20 minutes. Assumethat the room temperature is 20^° C. Calculate theminimum power needed to accomplish it.(1) 100 W(2) 102.5 W(3) 50 W(4) 107.8 W |
| Answer» 8. A refrigerator freezes 5 kg of water at O^° C into iceat 0^° C in a time interval of 20 minutes. Assumethat the room temperature is 20^° C. Calculate theminimum power needed to accomplish it.(1) 100 W(2) 102.5 W(3) 50 W(4) 107.8 W | |