When is delta U = 0?


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JeremyPark14B
Posts: 29
Joined: Fri Sep 28, 2018 12:19 am

When is delta U = 0?

Postby JeremyPark14B » Sun Mar 17, 2019 1:53 am

Under what conditions is delta U = 0?

Salena Chowdri 1I
Posts: 66
Joined: Fri Apr 06, 2018 11:02 am

Re: When is delta U = 0?

Postby Salena Chowdri 1I » Sun Mar 17, 2019 1:55 am

For an isothermal system delta U = 0

kateminden
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

Re: When is delta U = 0?

Postby kateminden » Sun Mar 17, 2019 8:48 am

The first law of thermodynamics states that the internal energy (delta U) of an isolated system is constant. This means that delta U = 0 in an isolated system, because no energy can be transferred to/from the system and no work can be done on or is being done by the system.

Claudia Luong 4K
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

Re: When is delta U = 0?

Postby Claudia Luong 4K » Sun Mar 17, 2019 10:54 am

In isothermal systems, the internal energy does not change so delta U is always equal to zero.

lukezhang2C
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: When is delta U = 0?

Postby lukezhang2C » Sun Mar 17, 2019 3:11 pm

Looking at the equation Delta U = q + w, delta U is only 0 when q = -w which means heat put into the system is equal to the heat out of the system, in other words the system is isolated with no net change in internal energy.


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