Boltzmann Equation for Entropy: $S = k_{B} \ln W$

Camille_Rousculp_3A
Posts: 17
Joined: Wed Sep 21, 2016 3:00 pm

In homework question 8.15, it says the in an adiabatic system q<0 is never true. Why is this?

Brianna Wummer 2L
Posts: 19
Joined: Wed Sep 21, 2016 2:56 pm

### Re: Adiabatic System

Hi there! An adiabatic system has no heat flow (its insulated). Therefore, q will always equal zero. q will never be negative, because no heat can be lost from the system, nor will it be positive, because heat cannot be added to the system. q is always zero for an adiabatic system. Hope that helps!

Camille_Rousculp_3A
Posts: 17
Joined: Wed Sep 21, 2016 3:00 pm

### Re: Adiabatic System

Yes it does! Thank you!

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