A refrigerator using a 0.5 hp motor has a coefficient of performance of 3.05. 2 gallons of tea (model as water) are placed into the refrigerator at 80°F. How long will it take for the refrigerator to cool the tea to 40°F, assuming that this is the only heat load to be considered? Does this seem realistic? If not, what assumptions were made that make the calculation appear unrealistic?
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