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Physics / University Physics 13 / Chapter 20 / Problem 10E

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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A room air conditioner has a coefficient of performance of

Chapter 20, Problem 10E

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QUESTION:

A room air conditioner has a coefficient of performance of 2.9 on a hot day and uses 850 W of electrical power. (a) How many joules of heat does the air conditioner remove from the room in one minute? (b) How many joules of heat does the air conditioner deliver to the hot outside air in one minute? (c) Explain why your answers to parts (a) and (b) are not the same.

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QUESTION:

A room air conditioner has a coefficient of performance of 2.9 on a hot day and uses 850 W of electrical power. (a) How many joules of heat does the air conditioner remove from the room in one minute? (b) How many joules of heat does the air conditioner deliver to the hot outside air in one minute? (c) Explain why your answers to parts (a) and (b) are not the same.

ANSWER:

Solution 10E Step 1 of 3: Given K = 2.9 | |= 5.1 × 10 J 4 |Q |= | C | | | |Q H |=

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