• Support PF! Buy your school textbooks, materials and every day products Here!

A qn on thermodynamic

  • Thread starter Wen
  • Start date
Wen
44
0
An ideal gas is carried through a thermodynamic cycle consisting of 2 isobaric and 2 isothermal processes.

Show that the nett work done is

W=P1( V2-V1)ln ( P2/P1)

i am really stuck at this qn for very long. Please help me
 

Attachments

Answers and Replies

HallsofIvy
Science Advisor
Homework Helper
41,736
894
I assume that you mean you have been working on it for a long time! Show us what you think you do understand about the problem and what work you have already done.
 
Wen
44
0
i know that Work done by the gas is
nRTIn( Vf/Vi) and this is only for the two isothermal processes
Since BC and DA are isobaric, the 2 isothermal processes are AB and CD.
The nett work done is the shaded area in the diagram.
But i do not know the volume of the gas at B & D.
 

Related Threads for: A qn on thermodynamic

  • Last Post
Replies
9
Views
2K
  • Last Post
Replies
0
Views
918
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
749
  • Last Post
Replies
1
Views
1K
Top