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13 results for “conservation”

Formulae (13)

\sum p_i = \sum p_f

Total momentum of an isolated system stays constant.

E_{total} = \text{const}

Energy cannot be created or destroyed, only transformed.

P + \tfrac{1}{2}\rho v^2 + \rho g h = \text{const}

Faster-moving fluid has lower pressure (energy conservation in flow).

\Delta U = Q - W

Energy conservation: change in internal energy equals heat added minus work done.

\sum I_{in} = \sum I_{out}

Current into a junction equals current out of it (charge conservation).

E_{total} = \text{constant}

Energy cannot be created or destroyed, only transformed.

\sum p_i = \sum p_f

Total momentum is conserved without external forces.

\sum q = \text{constant}

Total electric charge in an isolated system is conserved.

\Delta U = Q - W

Energy conservation for a thermodynamic system.

A_1 v_1 = A_2 v_2

Conservation of flow in an incompressible fluid.

P + \tfrac{1}{2}\rho v^2 + \rho g h = \text{const}

Energy conservation along a streamline.

P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}

Conservation of energy in fluid flow.

A_1 v_1 = A_2 v_2

Conservation of mass in incompressible flow.