internal energy

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internal energy

Postby AMahadi » Mon Jan 27, 2020 10:23 pm

How do you calculate internal energy?

Alice Ma 2K
Posts: 52
Joined: Wed Nov 13, 2019 12:26 am

Re: internal energy

Postby Alice Ma 2K » Mon Jan 27, 2020 10:32 pm

The change in internal energy, delta U, is calculated through Q plus W, where Q is the amount of heat transferred into the system and W is the work done on the system.

Miriam Villarreal 1J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

Re: internal energy

Postby Miriam Villarreal 1J » Wed Jan 29, 2020 8:10 am

in the equation ΔU=q+w w=0 and ΔU=q. The internal energy itself , NOT the change is equal to the heat of the system.

Kayli Choy 2F
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: internal energy

Postby Kayli Choy 2F » Wed Jan 29, 2020 3:34 pm

Additionally, if the change in internal energy is positive, then final internal energy is larger than initial internal energy. If the change in internal energy is negative, final internal energy is smaller than initial internal energy. The energy of a closed system can be altered by heating/cooling the system, or compressing/expanding the system, hence the equation delta U = Q + W, where q is heat and w is work.

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