delta u  [ENDORSED]


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Belle Calforda3f
Posts: 67
Joined: Fri Sep 29, 2017 7:07 am

delta u

Postby Belle Calforda3f » Sat Feb 10, 2018 1:46 pm

I just really do not understand delta u: what It means, how to caluculate it, how to know if it equals 0. Can anyone help? thanks

Tiffany Cao 1D
Posts: 94
Joined: Fri Sep 29, 2017 7:03 am
Been upvoted: 1 time

Re: delta u  [ENDORSED]

Postby Tiffany Cao 1D » Sat Feb 10, 2018 1:48 pm

Delta U is the change in internal energy. It is calculated through the formula, DeltaU=q+w. In an isolated system, deltaU=0 and consequently, w=-q.

Dang Lam
Posts: 55
Joined: Thu Jul 27, 2017 3:01 am

Re: delta u

Postby Dang Lam » Mon Feb 12, 2018 11:15 pm

how do you know if delta u =0 though? is it because there is no change is temperature? since deltaU = 3/2 R deltaT, and since deltaT = 0, deltaU is therefore =0 as well?

Nicole 1F
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

Re: delta u

Postby Nicole 1F » Tue Feb 13, 2018 1:30 am

^Yes, everything you said is correct. ΔU=0 for an isothermal process.

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