Question

finding work done in a constant-pressure

Answer 1

\[W = \int\limits_{v2}^{v1} pdv \]

I know that this would be P(V2- V1) but my teacher uses something different and gets like PV2/V and then uses natural log (ln) to do ln [ v2/v2] anyone know this?

Answer 2

looks like you are talking about an isothermal process and not an isobaric

Answer 3

recall pV=nRT
so T=const :
p = nRT/V
now integrate this over V

Answer 4

ah i see. How can you tell the difference? does it usually tell you in a problem?

Answer 5

yes it should be given (in some way)

Answer 6

ah thank you for the clarification