(a)
The change in total entropy of the reservoir.
(a)
Answer to Problem 80A
The change in total entropy of the reservoir is
Explanation of Solution
Given:
The heat energy removed from the hot reservoir is
The temperature of the hot reservoir is
The thermal energy transferred to the colder reservoir is
The temperature of the colder reservoir is
The entropy is also transferred from the one reservoir to the other.
Formula used:
The expression for the entropy change is,
Here, is the heat added to the object and is the temperature of the object in kelvins.
Calculation:
The net increase in the entropy of the reservoirs is,
Conclusion:
Thus, the change in total entropy of the reservoir is
(b)
The total entropy change of the reservoir for the given temperature.
(b)
Answer to Problem 80A
The total entropy change of the reservoir is
Explanation of Solution
Given:
The heat energy removed from the hot reservoir is
The temperature of the hot reservoir is
The thermal energy transferred to the colder reservoir is
The temperature of the colder reservoir is
The entropy is also transferred from the one reservoir to the other.
Formula used:
The expression for the entropy change is
Here, is the heat added to the object and is the temperature of the object in kelvins.
Calculation:
The net increase in the entropy of the reservoirs is,
Conclusion:
Thus, the total entropy change of the reservoir if the temperature of the colder reservoir is is
Chapter 12 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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