Finding internal energy change in a adiabatic compression process.

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Homework Help Overview

The problem involves an ideal gas undergoing adiabatic compression, with a focus on determining the change in internal energy based on the work done on the system.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the application of the First Law of Thermodynamics and question how work done on the system affects internal energy. There is uncertainty about whether energy is added to the system when work is applied from the outside.

Discussion Status

The discussion is exploring the implications of the First Law of Thermodynamics in the context of adiabatic processes. Some participants are questioning assumptions about energy transfer and the nature of work done on the system.

Contextual Notes

Participants are considering the specifics of the adiabatic process and the definitions of work and internal energy in thermodynamic contexts. There is a lack of consensus on the interpretation of the work done and its effect on internal energy.

tralelale1234
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Can you help me with this problem?

An ideal gas is compressed adiabatically. The work done over it is 200 J.
How much will the internal energy change?

A) 200 J
B) 100 J
C) -200 J
D) 0 J

Which formula do you use to solve it?

Thanks in advance!
 
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Try the First Law of Thermodynamics.
 
But in this case work is applied to the system from the outside.
So this means that energy is added to the system and the correct answer would be 200 J?
Correct me if I'm wrong.
 
What does the First Law of Thermodynamics say? Is it inapplicable when work is supplied from the outside?
 

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