A refrigerator has a COP of 9.5 and the power input is 80 watts. Calculate how many joules of energy input the refrigerator uses in 1 day and convert this into kilowatt-hours. Calculate the total energy Q(C) extracted in 1 day. If 1 kilowatt-hour of energy input costs 15 cents, calculate the cost of running the refrigerator for 1 day. Imagine 3% of the total Q(C) is used to freeze water at 0◦C into ice at 0◦C. Calculate the mass of ice the refrigerator can make in 1 day.
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