- #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!

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- 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

- 6,579

- 178

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.

Share: