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September 3, 2015

Homework Help: Physics(Please respond)

Posted by Hannah on Friday, June 22, 2012 at 11:26am.

A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment.



ÄU = Q - W
Where ÄU is the change in the internal energy of the system,
Q is the heat/energy gained from the surroundings,
W is the work done on the environment.

ÄU =80.6-210=-129.4 J.
The internal energy decreased by 129.4 Joules which corresponds to a temperature decrease of the system


I understand what the internal energy of the system is but I do not understand how to find the environment.

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