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# An aircraft engine takes in 9000 J of heat and discards

ISBN: 9780321675460 31

## Solution for problem 2E Chapter 20

University Physics | 13th Edition

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University Physics | 13th Edition

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Problem 2E

An aircraft engine takes in 9000 J of heat and discards 6400 J each cycle. (a) What is the mechanical work output of the engine during one cycle? (b) What is the thermal efficiency of the engine?

Step-by-Step Solution:

Solution 2E Step 1: Mechanical work output is QH = 9000 J W =16400 J Hence we have Total mechanical work is s\ W=QH W 1 W = 9000 J 6400 J = 2600 J Mechanical output is 2600 J

Step 2 of 2

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An aircraft engine takes in 9000 J of heat and discards