From your understanding, what is the second law of thermodynamics? Why do we nee

Question

From your understanding, what is the second law of thermodynamics? Why do we need it? (7) If a closed system undergoes an interval reversible process (process A) and an irreversible process (process B) between the same end states (a) How would the changes in entropy for the two processes compare? DeltaS_a () DeltaS_b (b) How would the amounts of entropy production compare? sigma_a() sigma_b (8) How can entropy be transferred into or out of an open system? (9) What's a power cycle? What is a heat pump? You can draw to explain. An inventor claims to have invented a heat engine that develops a thermal of 80% when operating between reservoirs at 1000 K and 300 K. True or False

Explanation / Answer

Heat engine operating between the two temperature 1000k and 300k , has found to have efficiency 70% ,so the statement is false.

(1000-300)/1000= 0.7 I.E. 70%

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