23. The Second Law of Thermodynamics
Entropy Equations for Special Processes
6:04 minutes
Problem 20.57a
Textbook Question
Textbook Question(III) A general theorem states that the amount of energy that becomes unavailable to do useful work in any process is equal to T_L∆S , where T_L is the lowest temperature available and ∆S is the total change in entropy during the process. Show that this is valid in the specific cases of:
(a) a falling rock that comes to rest when it hits the ground;
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