# Homework Help: Determine the net work done

1. Feb 19, 2006

### nrc_8706

Wbc=0 Wab=-3315.4J Wca=nRTLn(Va/Vc)=-2108.98

The net heat added to the gas for the entire cycle is 1200J. Determine the net work done by the gas on its surroundings for the entire cycle.

Don't you just add the works?

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2. Feb 19, 2006

### nrc_8706

why cant i see the attachments?

3. Feb 19, 2006

### nrc_8706

does anyone know how to do this?

4. Feb 20, 2006

### Tom Mattson

Staff Emeritus
Because they have to be approved by a moderator. We've had people attach porn in the past, so every attachment goes through a moderation queue. I've just approved all your attachments.

Are you sure about that? ab is an expansion, while ca is a compression. $\int p dV$ has a different sign along each path.