23. The Second Law of Thermodynamics
Refrigerators
3:55 minutes
Problem 20c
Textbook Question
Textbook QuestionA refrigerator has a coefficient of performance of 2.25, runs on an input of 135 W of electrical power, and keeps its inside compartment at 5°C. If you put a dozen 1.0-L plastic bottles of water at 31°C into this refrigerator, how long will it take for them to be cooled down to 5°C? (Ignore any heat that leaves the plastic.)
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