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6 results for “second law”

Formulae (6)

F = ma

Force equals mass times acceleration.

F = ma = \frac{dp}{dt}

Net force equals mass times acceleration (rate of change of momentum).

\frac{dA}{dt} = \text{const}

A line from a planet to the Sun sweeps equal areas in equal times.

\Delta S_{universe} \ge 0

The entropy of an isolated system never decreases.

\Delta S_{universe} \geq 0

Total entropy of an isolated system never decreases.

\Delta S = \frac{Q}{T}

Reversible entropy change at temperature T.