Physics, 06.11.2019 07:31 bryantmadison0

(a) what is the best coefficient of performance for a refrigerator that cools an environment at −30.0ºc and has heat transfer to another environment at 45.0ºc ? (b) how much work in joules must be done for a heat transfer of 4186 kj from the cold environment? (c) what is the cost of doing this if the work costs 10.0 cents per 3.60×106j (a kilowatt-hour)?

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