- #1
Niles
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Homework Statement
Hi all.
Lets take a look at the Helmholtz free energy. It is defined as the amount of energy one has to put into create a system once the spontaneous energy transfer to the system from the environment is accounted for.
Now let's look at it once we have created the system. Now F = U - TS is the energy we get from annihilating system. Why is it we have to subtract TS? Is it because we are talking about reversible processes, or what?
Thansk in advance.