can you tell me why the answer is b? 2. The general equation for the entropy in

Question

can you tell me why the answer is b?

2. The general equation for the entropy in a control volume according to the Second Law involves the following terms: I. accumulation of entropy in the control volume II. net entropy transfer between control volume and surroundings with heat III. transfer of entropy in by mass flow IV transfer of entropy out by mass flow V. entropy generated in the surroundings Using the standard sign conventions, which of the relations below is the correct arrangement of these terms that satisfies the 2'nd Law of Thermodynamics? (a) I II III IV V (b) I II III IV V (c) I IT III IV V (d) I-I-III IV-V

Explanation / Answer

(d ) is correct

it will be like this.... 1-2+3-4+5 =0

hence 1= 2-3+4-5

+ sign is for entropy entering

and - sign is for entropy leaving

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