Work

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Tiffany Cao 1D
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Work

Postby Tiffany Cao 1D » Sat Feb 10, 2018 3:08 pm

Does a system do work when a piston expands isothermally in a vacuum?
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Emma Li 2C
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Re: Work

Postby Emma Li 2C » Sat Feb 10, 2018 3:13 pm

I think doing work means there has to be an opposing force, so a system can't do work in a vaccuum :)
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Ethan Vuong 3G
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Re: Work

Postby Ethan Vuong 3G » Sat Feb 10, 2018 3:16 pm

Good question. I don't think so since it is in a vacuum and there is no change in temperature.
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Samantha Joseph 1F
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Re: Work

Postby Samantha Joseph 1F » Sat Feb 10, 2018 3:20 pm

If it is an irreversible isothermal expansion, then work would equal 0 because external pressure (due to this being a vacuum) equals 0, and the equation w= pex*deltaV makes w=0.
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Nickolas Manipud 1C
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Re: Work

Postby Nickolas Manipud 1C » Sat Feb 10, 2018 3:44 pm

No. Free expansion occurs since there is no external pressure acting upon the system.
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Annie Lieu-1H
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Re: Work

Postby Annie Lieu-1H » Mon Mar 12, 2018 10:00 am

Work does not occur in a vacuum, so no I think.
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Michael Downs 1L
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Re: Work

Postby Michael Downs 1L » Fri Mar 16, 2018 10:04 pm

Not externally
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