First Law


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Emily Orozco L4
Posts: 45
Joined: Fri Sep 28, 2018 12:29 am

First Law

Postby Emily Orozco L4 » Sun Feb 02, 2020 11:27 pm

By "internal energy" of an isolated system is it referring to heat?

Tracy Tolentino_2E
Posts: 140
Joined: Sat Sep 07, 2019 12:17 am

Re: First Law

Postby Tracy Tolentino_2E » Sun Feb 02, 2020 11:32 pm

internal energy of a system refers to the sum of potential energy of the system along with kinetic energy.

smurphy1D
Posts: 51
Joined: Mon Nov 18, 2019 12:18 am

Re: First Law

Postby smurphy1D » Mon Feb 03, 2020 10:24 am

U is the measurement of the random movement of molecules inside of a system

ALegala_2I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: First Law

Postby ALegala_2I » Mon Feb 03, 2020 10:29 am

In an isolated system, there is no transfer of heat or matter. In terms of internal energy (U=q+w), there is no heat exchange so q=0 and no change in matter so w=0. This means that the change in internal energy is equal to zero and that it remains constant throughout an experiment on an isolated system.

Kavya Immadisetty 2B
Posts: 106
Joined: Sat Aug 24, 2019 12:17 am
Been upvoted: 1 time

Re: First Law

Postby Kavya Immadisetty 2B » Mon Feb 03, 2020 10:38 am

Internal energy is the sum of potential and kinetic energy.

Pablo 1K
Posts: 118
Joined: Sat Feb 02, 2019 12:15 am

Re: First Law

Postby Pablo 1K » Mon Feb 03, 2020 12:32 pm

It is the sum of all energy in the system both kinetic and potential.


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