Isolated system

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TarynLane2J
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

Isolated system

Postby TarynLane2J » Thu Jan 18, 2018 1:07 pm

Can you do work on an isolated system? I know you cannot add any substances or heat/cool an isolated system, but what about doing work?

Maeve Gallagher 1J
Posts: 56
Joined: Fri Sep 29, 2017 7:07 am

Re: Isolated system

Postby Maeve Gallagher 1J » Thu Jan 18, 2018 1:17 pm

No, you can't do work on an isolated system. Doing work changes the energy of the system, and since in an isolated system the internal energy remains constant, work cannot be done on it.

MSkye Goldwater 2K
Posts: 19
Joined: Fri Sep 29, 2017 7:05 am

Re: Isolated system

Postby MSkye Goldwater 2K » Thu Jan 18, 2018 3:50 pm

An isolated system has no contact with its surroundings. The way the book puts it is that an isolated system can exchange nothing (neither work nor matter) with its surroundings.

Susie Lee 2I
Posts: 20
Joined: Fri Sep 29, 2017 7:05 am

Re: Isolated system

Postby Susie Lee 2I » Sat Jan 20, 2018 1:10 pm

This is why the energy of an isolated system must remain constant because no matter or heat can be transferred and the system cannot be physically changed.

Miguel Velasco 2J
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Re: Isolated system

Postby Miguel Velasco 2J » Sun Jan 21, 2018 8:38 pm

Work cant be done in an isolated system. There is no energy transfer from the system and the surroundings so assume both work and heat exchange are zero.

Dang Lam
Posts: 55
Joined: Thu Jul 27, 2017 3:01 am

Re: Isolated system

Postby Dang Lam » Tue Jan 23, 2018 11:41 am

No you cannot because there is no volume change.

Jessica_Singh_1J
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

Re: Isolated system

Postby Jessica_Singh_1J » Tue Jan 23, 2018 1:04 pm

Nope - an isolated system can exchange neither matter nor energy with its surroundings.

Erik Khong 2E
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Isolated system

Postby Erik Khong 2E » Tue Jan 23, 2018 4:20 pm

No. No work can be done with an isolated system. Also, its internal energy is constant, which is the First Law of Thermodynamics.

Mitch Walters
Posts: 45
Joined: Fri Sep 29, 2017 7:07 am

Re: Isolated system

Postby Mitch Walters » Tue Jan 23, 2018 4:48 pm

No, an isolated system cannot be affected in any way by the surroundings.


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