Here is the question:
An insulated tube with a movable piston at one end had 500J of heat added to it. If, during the experiment, the piston moves and does 75J of work on the atmosphere, what is the change in energy of the tube system?
If someone could explain, that would be great.How does one calculate change in energy of an insulated tube?
螖U=q+w=500 J+(-75 J)=+425 J
螖U=change in internal energy
q=change in heat energy
w=work
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