Question about today's lecture 1/24/18

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Michelle Chernyak 1J
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Joined: Fri Sep 29, 2017 7:06 am

Question about today's lecture 1/24/18

Postby Michelle Chernyak 1J » Wed Jan 24, 2018 1:33 pm

In today's lecture, Dr. Lavelle stated that in the isothermal reversible reaction, the gas expanding against the vacuum is exerting work. This confused me because I thought that with a vacuum, there is no opposing force, therefore work cannot be done because work= opposing force X distance. Can someone please explain to me why this expanding gas is exerting work?

Esin Gumustekin 2J
Posts: 57
Joined: Thu Jul 27, 2017 3:01 am

Re: Question about today's lecture 1/24/18

Postby Esin Gumustekin 2J » Wed Jan 24, 2018 3:23 pm

In that example, the gas was doing work by pulling a weight a vertical distance up. Thus work was done by pulling the mass (force) over a specific distance (d).

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