- #1

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- 0

(a) What is the change in the entropy of the system?

(b) What is the maximum amount of work that can be done?

Relevant equations

U=CvT

Cv is not time dependent

(a) I got ΔS=nCv*ln(Th/Tc)

(b) No idea where to start, any help would be great!

- Thread starter J.Welder12
- Start date

- #1

- 5

- 0

(a) What is the change in the entropy of the system?

(b) What is the maximum amount of work that can be done?

Relevant equations

U=CvT

Cv is not time dependent

(a) I got ΔS=nCv*ln(Th/Tc)

(b) No idea where to start, any help would be great!

- #2

I like Serena

Homework Helper

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For (a) you need to consider the 2 bodies separately and apply your formula ΔS=nCv*ln(T2/T1) to them.

This gives 2 contributions to ΔS.

For (b) you should calculate U for both bodies before and after.

The difference is the maximum amount of work that can be extracted.

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