equations Flashcards
4th form end of year
what’s the equation linking speed, distance and time
speed = distance/time
what’s the equation linking acceleration, velocity and time
acceleration = change in velocity/time
what’s the equation linking force, mass and acceleration
force = mass x acceleration
what’s the equation linking weight, mass and gravitational field strength
weight = mass x gravitational field strength
what’s the equation linking moment, force and perpendicular distance
moment = force x perpendicular distance from pivot
what’s the equation linking power, current and voltage
power = current x voltage
what’s the equation linking voltage, current and resistance
voltage = current x resistance
what’s the equation linking charge current and time
charge = current x time
what’s the equation linking wave-speed, frequency and wavelength
wave-speed = frequency x wavelength
what’s the equation for refractive index?
n = sin(i)/sin(r)
what is the equation to work out sin(c)
sin(c) = 1/n
what’s the equation linking efficiency, useful energy output and total energy input
efficiency = useful energy output/total energy input
what’s the equation linking density, mass and volume
density = mass/volume
what’s the equation linking pressure, force and area
pressure = force/area
what’s the equation linking pressure difference, height, density and g
pressure difference = height x density x g
