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physics equations - Coggle Diagram
physics equations
forces
weight = mass x 9.8
work done = force x distance (movement along the line of action of the force)
force - spring constant x extension
moment of a force = force x distance (perpendicular to the direction of the force)
pressure = force normal to a surface / area of that surface
distance travelled = speed x time
acceleration = change in velocity / time taken = final velocity - initial velocity / time taken
resultant force = mass x acceleration
momentum = mass x velocity
pressure = height of column x density of liquid x 9.8
final velocity 2^ - initial velocity 2^ = 2 x acceleration x distance
force = change in momentum / time taken
energy
kenetic energy = 0.5 x mass x velocity 2^
GPE = m x 9.8 x h
power = work done / time taken = energy transfered / time taken
efficiency (energy) - useful energy output / total energy output
efficiency (power) - useful power output / total power output
elastic potential = 0.5 x spring constant x extension 2^
change in thermal energy = mass x specific heat capacity x temperature change
electricity
charge flow = current x time
potential difference = current x resistance
total resistance = resistance of a component 1 + resistance of component 2
power = current x potential difference
power = current 2^ x resistance
energy transferred = power x time
energy transferred = charge flow x potential difference
particle matter of a model
density = mass / volume
change in thermal energy = mass x specific heat capacity x temperature change
thermal change for a change in state = mass x specific latent heat
(for a gas) - pressure x volume = constant
waves
wavespeed = frquency x wavelength
time period - 1 / frequency
magnification = image size / actual size
magnetism and electromagnetism
force = magnetic flux density x current x length of conductor in magnetic field
potential difference across primary coil / potential difference across secondary coil = number of turns in primary coil / number of turns in secondary coil
p.d across primary coil x current in primary coil = p.d across secondary coil x current in secondary current