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Advanced level formulae shortened version

This is a shortened list of formulae that you might need for the first year of your advanced Physics course. For a fuller list please use the Formulae list.

Quantity Formula
Acceleration Acceleration = change of speed/Time taken = Δv/Δt
de Broglie equation Wavelength of a particle (λ) = h/mv
Density Density (ρ) = mass/volume
Double slit interference Wavelength (λ) = slit separation (a) x fringe width 9x)/D
Electric current Current (I) = charge/time = ΔQ/Δt
Electrical energy Energy = VIt
Electrical resistance R = voltage/current = V/I
Force (F) F = mass (m) x acceleration (a)
Force on a current in a magnetic field F = BIL sinθ
Gravitational potential energy Gravitational potential energy = mgh
Kinetic energy Kinetic energy = 1/2 mv2
Moment of a force Moment = Force x distance of line of action of force from pivot
Momentum Momentum = mass x velocity
Photoelectric effect hf = Φ + 1/2 mv2
Photon energy Energy (E) = Planck's constant (h) x Frequency (f)
Potential difference V = W/Q = energy/charge = power/current
Power Power = work done/time taken
Power (electrical) Power = VI = I2R = V2/R
Pressure P = Force/area
Refractive index Refractive index = sin i/sin r = ci/cr
Resistivity Resistivity (ρ) = RA/L
Resistors in parallel 1/R = 1/R1 + 1/R2
Resistors in series R = R1 + R2
Speed Speed = distance travelled/time taken
Strain Strain (ε) = extension/original length
Stress Stress (σ) = force/area
Torque of a couple Torque = force (one) x distance between forces
Uniformly accelerated motion s = ut + 1/2 at2     v2 = u2 + 2as
Wave speed Wave speed = frequency (f) x wavelength (λ)
Weight Weight = mg
Work done Work = force x distance
Young modulus E = longitudinal stress/longitudinal strain = FL/eA

© Keith Gibbs