It is known that heat is added to a gas in sealed container. The container is fitted with a moveable piston. It is known that heat is added to a gas in sealed container. The container is fitted with a moveable piston.
The temperature of the gas decreases.
The temperature of the gas increases.
The temperature of the gas remains the same.
Not enough information is given to answer this question.
(Temp of gas increases was incorrect)
If the piston remains stationary then the work done by the gas will be zero , W = 0
Then U = Q - W
cv (dT) = Q ( since heat is added, temperature increases)
If the piston moves and the the work done by the gas is greater than the heat added, then
U = Q - W will be less than 0
Hence the temperature will decrease
If the piston moves and the the work done by the gas is equal to the heat added, then
U = Q - W = 0
Hence the temperature remains same
Since it is not mentioned in the question about work done by the gas on moveable piston, hence Not enough information is given to answer this question.
It is known that heat is added to a gas in sealed container. The container is...
A sealed cylindrical pump contains one mole of an ideal gas. The
piston fits tightly so that no gas escapes, but friction is
negligible between the piston and the cylinder walls.
The pump is thermally insulated from its surroundings. The
piston is quickly pressed inward as indicated in the diagram.
I am not sure how to approach solving this problem. All
questions are part of Part 1. Any help would be greatly
appreciated!
Part I insulation A sealed cylindrical pump...
need help with both questions please.
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The first part of the problem gave this info:
A sealed cylindrical pump contains one mole of an ideal gas. The
piston fits tightly so that no gas escapes, but friction is
negligible between the piston and the cylinder walls. The pump is
thermally insulated from its surroundings. The piston is quickly
pressed inward as indicated in the diagram. The pump is returned to
its original state and then (without the insulation) placed in a
very large container that is...
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