Themodynamics: Systems at Equilibrium  [ENDORSED]

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Annie Zhang_ 3C
Posts: 12
Joined: Wed Sep 21, 2016 2:59 pm

Themodynamics: Systems at Equilibrium

Postby Annie Zhang_ 3C » Fri Jan 20, 2017 8:45 pm

Hi,

I was a little confused as to the note on page 22 of the course reader that stated that thermodynamics is the study of changes in energy for systems in equilibrium, and then that the change in work would thus depend on small fluctuational biases of things like the pressure or volume? How does one consider the changes of internal energy, heat at constant pressure, etc for systems not in equilibrium in that case?

Thank you!

Kareem
Posts: 18
Joined: Wed Sep 21, 2016 3:00 pm

Re: Themodynamics: Systems at Equilibrium  [ENDORSED]

Postby Kareem » Sat Jan 21, 2017 1:43 pm

I believe the whole point is that the systems were at equilibrium and then something upset the balance and you calculate the work expended to return to equilibrium.


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