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Inquiry into Physics

8th Edition
Ostdiek
ISBN: 9781337515863
Textbook Problem

(¦ Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)
41. In a galaxy far, far away, a process occurs that results in a decrease in the entropy of a system by 8 J/K; that is, S = —8 J/K. According the entropy form of the second law of thermodynamics, which of the following (there may be more than one) is a possible value for the entropy change+ S. For the rest of the universe? Explain your choice(s).
(a) -8J/K
(b) 0 J/K
(c) +8 J/K
(d) +16 J/K.

To determine

The possible value of entropy change for rest of the universe.

Explanation

Given information:

A system in a galaxy undergoes decrease in entropy by an amount of 8 J/K.

Concept used:

Second law of thermodynamics states that the total entropy of an isolated system remains constant or say never decreases with time.

Since, universe is considered as an isolated system and the total entry change for this universe will remain conserved as per the second law of thermodynamics...

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