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Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker
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· · IP Referring to Active Example 18–3 Suppose the

Chapter 18, Problem 101IP

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QUESTION:

Problem 101IP

· · IP Referring to Active Example 18–3 Suppose the temperature of the hot reservoir is increased by 16 K, from 576 K to 592 K, and that the temperature of the cold reservoir is also increased by 16 K,from 305 K to 321 K. (a) Is the new efficiency greater than, less than, or equal to 0.470? Explain. (b) What is the new efficiency? (c) What is the change in entropy of the hot reservoir when 1050 J of heat is drawn from it? (d) What is the change in entropy of the cold reservoir?

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QUESTION:

Problem 101IP

· · IP Referring to Active Example 18–3 Suppose the temperature of the hot reservoir is increased by 16 K, from 576 K to 592 K, and that the temperature of the cold reservoir is also increased by 16 K,from 305 K to 321 K. (a) Is the new efficiency greater than, less than, or equal to 0.470? Explain. (b) What is the new efficiency? (c) What is the change in entropy of the hot reservoir when 1050 J of heat is drawn from it? (d) What is the change in entropy of the cold reservoir?

ANSWER:

Solution 101IP

Step 1 of 5

To calculate the change in efficiency and the change in entropy of a system.

The equation for the efficiency of a heat engine

 

Where,  - Temperature cold reservoir

             - Temperature of hot reservoir

a)

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