IGCSE PHYS

• Velocity = distance / time
• Acceleration = change in velocity / time
• Gravitational field strength = mass x 9.8 x change in height
• Density = mass / volume
• weight = mass x gravitational field strength
• force = acceleration x mass
• resultant force = acceleration x mass
• spring constant = force / extension
• moment = force x perpendicular distance
• momentum = mass x velocity
• force = change in momentum / time
• impulse = force x time
• kinetic energy = 1/2 x mass x velocity squared
• gravitational potential energy = mass x gravity x height
• work done = force x distance
• power = work done / time
• pressure = force / area
• Boyle's Law: P1V1 = P2V2
• Specific heat capacity = heat energy / mass x change in temp
• Energy change = specific heat capacity x mass x change in temp
• wave speed = frequency x wavelength
• refractive index = sin(i) / sin(r)
• sin(c) = 1 / refractive index
• current = charge / time
• voltage = work done / charge
• resistance = voltage / current
• power = voltage x current
• energy transferred = power x time
• Vp / Vs = Np / Ns
• Average orbital speed = (2 x pi x average radius) / time
• Hubbles constant = velocity / distance
• pressure = density x gravity x height
• Charles' law: V1 / T1 = V2 / T2
• speed of light: 3.0 x 10^8 m/s
• Speed of sound in air: 343 m/s