negative vs. positive internal energy


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haleyervin7
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

negative vs. positive internal energy

Postby haleyervin7 » Wed Jan 30, 2019 9:04 pm

What is happening physically in a system when the change of internal energy of a system is negative vs. positive?

Ibrahim Malik 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am
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Re: negative vs. positive internal energy

Postby Ibrahim Malik 1H » Wed Jan 30, 2019 9:08 pm

When the change in internal energy of a system is negative, it means work is being done on the environment. When the change in internal energy of a system is positive, it means work is being done on the system from the environment.

904914909
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: negative vs. positive internal energy

Postby 904914909 » Fri Feb 01, 2019 7:59 pm

When U is negative, that means the net energy is out of the system or the system is doing work on the surrounding. When U is positive, that means net energy is into the system or the surroundings are doing work on the system.


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