Internal energy


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405318478
Posts: 90
Joined: Sat Jul 20, 2019 12:16 am

Internal energy

Postby 405318478 » Sun Feb 02, 2020 9:02 pm

Could someone clarify exactly what U, internal energy, is? Beyond the equation U=q+W, why is U significant?

Nawal Dandachi 1G
Posts: 102
Joined: Sat Sep 28, 2019 12:16 am

Re: Internal energy

Postby Nawal Dandachi 1G » Sun Feb 02, 2020 9:03 pm

U is the total energy of a closed system.

205007651
Posts: 53
Joined: Tue Nov 13, 2018 12:17 am

Re: Internal energy

Postby 205007651 » Sun Feb 02, 2020 9:05 pm

Internal energy is the total energy of a closed system

JohnWalkiewicz2J
Posts: 103
Joined: Thu Jul 11, 2019 12:17 am
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Re: Internal energy

Postby JohnWalkiewicz2J » Sun Feb 02, 2020 9:16 pm

U stands for all energy consisting in my closed system, and is the sum of all heat in or released by a system (H) and all work done or done by a system (w).

KHowe_1D
Posts: 103
Joined: Thu Jul 25, 2019 12:15 am
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Re: Internal energy

Postby KHowe_1D » Sun Feb 02, 2020 9:21 pm

The total energy within the closed system is U which is internal energy.

Natalie Benitez 1E
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Internal energy

Postby Natalie Benitez 1E » Sun Feb 02, 2020 11:34 pm

Why can’t U be the internal energy of an open system?


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