Physics-Formulas

Speed formula

V = \frac{d}{t}

Acceleration

A = \frac{\Delta v}{\Delta t}

Force

F=ma

Spring constant

F = kx

Moment

M = Fd

Pressure

P = \frac{F}{A}

Work

W = Fd

Kinetic energy

K = \frac{1}{2}mv^2

Power (energy transfer rate)

P = \frac{\Delta E}{t}

Gravitational potential energy

GPE = mgh

Density

\rho = \frac{m}{V}

Temperature Conversion (Celsius to Kelvin)

TK = TC + 273

Pressure in a liquid

P = \rho gh

Energy transferred (specific heat capacity)

E = mc\Delta T

Power (general definition)

P = \frac{\text{Work done}}{\text{time taken}} = \frac{\text{Energy transferred}}{\text{time taken}}

Efficiency

\eta = \frac{\text{Useful Work Done}}{\text{Total Energy Output}} = \frac{\text{Useful Energy Output}}{\text{Total Energy Output}} = \frac{\text{Useful Power Output}}{\text{Total Power Output}}

Wave Speed

V = f\lambda

Refraction of light (Snell's Law)

n = \frac{\sin i}{\sin r}

Total Internal Reflection (critical angle)

\sin c = \frac{1}{n}