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4 cards from this section. Quick, good the night before a test.
Define the First Law of Thermodynamics in your own words.
Think about conservation of energy.
What does ΔU represent in the context of the First Law?
It is related to the state of the system.
What does the First Law of Thermodynamics state?
Refer to concepts of conservation.
True or False: The internal energy of a system depends on its history.
Think about the definition of state variables.
A piston compresses a gas in a cylinder and does 150 J of work on it while 75 J of heat is lost to the surroundings. Calculate the change in internal energy.
Remember to consider the sign for heat lost.
Design a simple experiment to observe the First Law of Thermodynamics using a heat source, a cylinder, and a gas. Describe expected observations.
Think about how each component interacts thermodynamically.
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