Understanding Thermodynamics and PV Graphs
Interactive Video
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Aiden Montgomery
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Physics, Science
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10th - 12th Grade
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Hard
14:22
10 questions
Show answers
1.
Multiple Choice
What does the first law of thermodynamics state about the relationship between internal energy, heat, and work?
Internal energy is independent of heat and work.
Internal energy is the difference between heat and work done by the system.
Internal energy is the sum of heat and work done on the system.
Internal energy is only affected by heat, not work.
2.
Multiple Choice
In a piston-cylinder system, what happens when the gas is compressed?
The volume decreases and work is done by the gas.
The volume increases and work is done by the gas.
The volume decreases and work is done on the gas.
The volume remains constant and no work is done.
3.
Multiple Choice
How is work affected when a gas expands and pushes a piston up?
Work done on the gas is negative.
Work done on the gas is positive.
No work is done.
Work done by the gas is negative.
4.
Multiple Choice
What is the result of a thermodynamic cycle that rotates clockwise on a PV graph?
The system does no work and gains energy.
The system does work on the surroundings and has negative net work.
The system loses energy and has positive net work.
The system gains energy and does no work.
5.
Multiple Choice
What is the primary function of a refrigerator in terms of thermodynamic cycles?
To decrease the pressure inside the refrigerator.
To increase the internal energy of the contents.
To remove heat from the contents.
To add coldness to the contents.
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