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When is delta U = 0?

Posted: Sun Mar 17, 2019 1:53 am
by JeremyPark14B
Under what conditions is delta U = 0?

Re: When is delta U = 0?

Posted: Sun Mar 17, 2019 1:55 am
by Salena Chowdri 1I
For an isothermal system delta U = 0

Re: When is delta U = 0?

Posted: Sun Mar 17, 2019 8:48 am
by kateminden
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.

Re: When is delta U = 0?

Posted: Sun Mar 17, 2019 10:54 am
by Claudia Luong 4K
In isothermal systems, the internal energy does not change so delta U is always equal to zero.

Re: When is delta U = 0?

Posted: Sun Mar 17, 2019 3:11 pm
by lukezhang2C
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.