You have just bought a Carnot refrigerator to keep your frozen vegetables frozen. If you intend to run your refrigerator between the cold temperature reservoir at -5°C (the inside of the box) and the high temperature reservoir at 26°C (your kitchen temperature) how much work will be needed to draw 15 J of heat from the cold reservoir?

Physics for Scientists and Engineers, Technology Update (No access codes included)
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ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
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Chapter22: Heat Engines, Entropy, And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 22.10P: A heat pump has a coefficient of performance of 3.80 and operates with a power consumption of 7.03 ...
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You have just bought a Carnot refrigerator to keep your frozen vegetables frozen. If you intend to run your refrigerator between the cold temperature reservoir at -5°C (the inside of the box) and the high temperature reservoir at 26°C (your kitchen temperature) how much work will be needed to draw 15 J of heat from the cold reservoir? 

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