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ΔU = Q + W (First Law of Thermodynamics Equation) in AP Physics 2

Verified for the 2027 exam
Verified for the 2027 exam•Fiveable Content Team

Definition

This equation represents the first law of thermodynamics which states that the change in internal energy (ΔU) is equal to the heat added to a system (Q) plus the work done by or on the system (W).

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AP course connection

Topic 2.7: Internal Energy and Energy Transfer

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Unit 2

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