(A)
Interpretation:
The change in entropy of the universe
Concept Introduction:
Write the expression for entropy.
Here, the house temperature is
Write the expression to calculate the change in entropy of the universe.
Here, entropy of the system is
(B)
Interpretation:
Is any heating system required to maintaining this house at
(C)
Interpretation:
The efficiency of Carnot heat engine and the net work done on the system.
Concept Introduction:
Write the expression to determine the efficiency of Carnot heat engine.
Here, temperature of heat sink is
Write the efficiency of Carnot heat engine.
Here, heat added to the system is
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