ΔU = Q + W (First Law of Thermodynamics Equation)
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).
Analogy
Imagine you have a piggy bank where you can add money (heat) and take out money (work). The change in your savings balance (internal energy) is equal to the money you put in (heat added) plus the money you take out (work done).
Related terms
Heat Transfer: The process by which thermal energy is exchanged between objects due to temperature differences.
Work Done: The transfer of mechanical energy from one object to another through applied forces.
Internal Energy: The total potential and kinetic energies within a system.
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