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AP Physics 2: Core Concepts & Definitions

Master the fundamental definitions, laws, and principles essential for AP Physics 2, including Thermodynamics, Fluids, and Electricity.

20 cards

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#1

Front

Thermodynamics: System vs. Surroundings

Back

The **system** is the specific object or collection of matter being studied, while the **surroundings** are everything else outside the system that can exchange energy or matter with it.

#2

Front

Ideal Gas Law Equation

Back

**PV = nRT** Where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature in Kelvin. It relates the macroscopic properties of an ideal gas.

#3

Front

Thermal Equilibrium

Back

The state in which two objects in contact reach the same **temperature** and no net heat (energy) flows between them because they are at the same thermal potential.

#4

Front

Zeroth Law of Thermodynamics

Back

If Object A is in thermal equilibrium with Object B, and Object B is in thermal equilibrium with Object C, then Object A and Object C are in thermal equilibrium. This defines temperature empirically.

#5

Front

First Law of Thermodynamics

Back

**Delta U = Q - W** The change in internal energy (Delta U) of a system equals the heat added to the system (Q) minus the work done *by* the system (W). It is a statement of conservation of energy.

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