v = u + at – **velocity**

ma – **Force**

Fd – **Torque**

mv – **Momentum (p)**

½mv² – **Kinetic Energy**

mgh – **Potential Energy**

Fs – **Work**

W/t – **Power**

kx – **Force of Spring**

1/f – **Period **(f=frequency)

Gmm/r² – **Force of gravity between two masses**

E/q – **Force on charge by electric field**

F/q – **Electric field**

W/Q – **Potential difference**

Q/V – **Capacitance (C)**

RA/l – **Resistivity**

IR – **Potential Difference (V)**

IV – **Power (terms of voltage)**

I²R – **Power (terms of resistance)**

R tot=R₁+R₂+R₃…. – **Total Resistance (Series)**

(1/R₁)+(1/R₂)+(1/R₃)+…=(1/Rtotal) – **Total Resistance in Parallel**

Bev – **Force of B field on charged particle**

BI L – **Force of B field on wire**

BA – **Magnetic Flux**

þgh – **Pressure in a liquid**

F/A – **Pressure**

hf – **energy (wave)**

hf-work function – **Kinetic Energy**

v/λ – **Wavelength**

mc² – **Energy** ( with ref to c)

fλ – **velocity of a wave**

sin i /sin r – **index of refraction (n)**

1/n – **sin of critical angle C**

(1/u)+(1/v)=1/f – **Mirors and lenses**

s = ut + ½at² – **distance in terms of u, t and a**

v² = u² + 2as – **velocity in terms of u, s and a**

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂ – **Conservation of momentum**

s/r – **Angle in radians θ**

θ/t – **Angular Velocity**

v = rω – **Relationship between linear velocity and angular velocity**

rω² = v²/r – **Centripetal acceleration**

mrω² = (mv²)/r – **Centripetal force**

mg – **Weight**

Gm₁m₂/d² – **Newton’s law of gravitation**

GM/R² – **g in terms of M and R**

4π²R³ / GM – **T²**

m/V – **Density**

pV=constant – **Boyle’s law**

Fs – **Moment**

Fd – **Couple**