test question 5

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Melissa Per 2J
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Joined: Fri Sep 29, 2017 7:04 am

test question 5

Postby Melissa Per 2J » Sun Feb 04, 2018 11:31 pm

Why are the CONTENTS of an ideal cooler at 3 degrees Celcius an isolated system?

Mitch Mologne 1A
Posts: 74
Joined: Fri Sep 29, 2017 7:04 am

Re: test question 5

Postby Mitch Mologne 1A » Sun Feb 04, 2018 11:33 pm

Because neither energy nor matter can be added to system, nor can it leave the container. Just because a system is isolated does not mean that it cannot have heat or energy already in the system, but rather that it cannot be lost/gained.

juchung7
Posts: 44
Joined: Fri Sep 29, 2017 7:05 am

Re: test question 5

Postby juchung7 » Sun Feb 04, 2018 11:35 pm

I think the idea is that an ideal cooler will not let and heat or matter in or out (thus isolated) and in turn because the contents are inside, they will not be able to change from their original state either.

Christina Cen 2J
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Joined: Sat Jul 22, 2017 3:01 am

Re: test question 5

Postby Christina Cen 2J » Sun Feb 04, 2018 11:37 pm

So in this question, is the system considered the contents of the cooler as well as the cooler itself, rather than just the contents being the system?

Anne 2L
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Joined: Fri Sep 29, 2017 7:05 am

Re: test question 5

Postby Anne 2L » Mon Feb 05, 2018 12:51 pm

Christina Cen 2J wrote:So in this question, is the system considered the contents of the cooler as well as the cooler itself, rather than just the contents being the system?



In this question, the contents of the cooler alone should be considered the system. The cooler itself should be considered the surrounding. Since the cooler is "ideal" however, we would assume that the cooler is adiabatic, meaning heat cannot enter and leave through it. As a result, any heat in the system (contents of cooler) stays solely inside the system.

Kaelie Blanes-Ronda 2L
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Re: test question 5

Postby Kaelie Blanes-Ronda 2L » Fri Feb 09, 2018 9:01 pm

I think that part of it is that the cooler is most likely an electric one that works like a fridge rather than a styrofoam cooler which is more likely to be affected by the temperature of the environment.


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