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Speed and acceleration:
where: v is velocity x is displacement (or distance) t is time a is acceleration Uniformly accelerated motion:
where: v is final velocity u is initial velocity x is displacement (or distance) t is time a is acceleration Momentum and force:
where: p is momentum m is mass F is force Δ is change in Circular motion:
where: ω is angular velocity v is velocity T is period r is radius F is force m is mass Work and energy:
where: g is gravitational field strength (9.81 N/kg) W is work PE is potential energy KE is kinetic energy m is mass v is velocity h is height Δ is change in F is force Power and efficiency:
where: P is power Δ is change in F is force W is work v is velocity t is time Stress and strain:
where: A is area e is extension l is length F is force Current electricity:
where: Q is charge I is current V is voltage R is resistance Є is the electro-motive force (e.m.f) Capacitors:
where: C is capacitance d is distance V is voltage A is area d is distance E is energy Radioactivity:
where: I is intensity of radiation E is energy m is mass T1/2 is half-life c is light's speed (299 792 485 m/sec) λ is wavelength N is number of radioactive atoms Simple harmonic motion:
where: T is period l is length of pendulum's string x is displacement moved by pendulum g is gravitational field strength ω is angular velocity v is velocity a is acceleration m is mass k is spring stifness Waves:
where: f is frequency s is fringe separation λ is wavelength D is distance to screen w is slit separation d is grate spacing c is velocity of wave Refraction:
where: n is refractive index c is speed of light in a vacuum v is speed of light in material θ1 is angle of incidence θ2 is angle of refraction Photons and duality:
where: Ek is kinetic energy E is energy f is frequency p is momentum h is Planck's constant Φ is work function for metal Magnetism:
where: Φ is flux F is force Q is charge v is velocity μ is the permeability of free space (constant) n is number of turns divided by length of coil B is field flux density I is current l is length of wire Induced Current:
where: N is the number of turns of a coil is the electro-motive force (e.m.f) L is the self-inductance (constant) A.c. and transformers:
where: N/I/Vp is primary number of turns/current/voltage of transformer N/I/Vs is secondary number of turns/current/voltage of transformer r.m.s. is root mean square X is reactance w is angular frequency C is capacitance Gravitation:
where: g is gravitational strength G is universal constant of gravitation V is gravitational potential Thermodynamics:
where: c is specific heat capacity l is specific latent heat Q is amount of heat transferred T is temperature U is internal energy W is work done by a system k is Boltzman' constant Gases:
where: p is pressure V is volume N is number of particles c is average speed of particles n is number of moles in a gas R is universal molar gas constant Electrostatics:
where: F is force Q is charge r is distance between 2 charged objects ε0 is permittivity of free space E is energy V is voltage d is distance moved by charge ΔPE is change in potential
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