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Isolated Systems

Posted: Fri Jan 13, 2017 10:05 pm
by Gina_Chiarolla_3C
There is a question in the textbook that describes a high quality thermos as an isolated system. Why would this be considered an isolated system instead of a closed system if it is possible for the thermos to lose heat over long periods of time?

Re: Isolated Systems  [ENDORSED]

Posted: Fri Jan 13, 2017 10:10 pm
by Molly Laviano 3N
While an argument could, in theory, be made to say that a high quality thermos is a closed system, we ultimately would choose to consider to be an isolated system because the insulation of the thermos captures the heat to a fairly strong degree. Therefore, very minimal heat, if any, is lost from the system.

Re: Isolated Systems

Posted: Fri Jan 13, 2017 10:21 pm
by Laine Gruver 3C
There's truly no such thing as an isolated system, only very close to one, so I think you always have to read in between the lines as to what the problem is getting at.

Re: Isolated Systems

Posted: Tue Jan 17, 2017 11:36 am
by Katie McCombs 3G
In this case it is saying it is the best example of an isolated system. While we know that over time it does lose heat, it in theory (if it is a quality thermos) acts as an isolated system that does not exchange heat or matter.