Paper 2 Flashcards
Weight, mass, gravity
Weight = mass x gravity
W = m x g
(N) (kg) (N/kg)
Force, spring constant, extension
Force = spring constant x extension
F = k x e
(J) (N/m) (m)
Work, force, distance
Work = force x distance
W = f x s
(J) (N) (m)
Kinetic energy, mass, velocity
Kinetic energy = 1/2 mass x velocity^2
Ek = 1/2 x m x v^2
(J) (kg) (m/s)
Pressure, force, area
Pressure = force/area
P = F/A
(Pa) (N) (m^2)
Distance, speed, time
Distance = speed or velocity x time
S = V x t
(m) (m/s) (s)
Acceleration,change in velocity, time
Acceleration = change in velocity / time
a = triangle v/t
(m/s^2) (m/s) (s)
Final velocity, initial velocity, acceleration, distance
Final velocity - initial velocity = 2 x acceleration x distance
V^2 - u^2 = 2 x a x s
(m/s) (m/s^2) (m)
Momentum, mass, velocity
Momentum = mass x velocity
P = m x v
(kg m/s) (kg) (m/s)
Time period, frequency
Time period = 1/ frequency
T = 1/f
(s) (Hz)
Wave speed, frequency, wave length
Wave speed = frequency x wave length
V = f x lambda
(m/s) (Hz) (m)
Moment, force, distance
Moment = force x distance
M = f x d
(Nm) (N) (m)
Speed, distance, time
Speed = distance/time
m/s) (m) (s
Magnification, image height, object height
Magnification = image height/object height
voltage in primary coil, voltage in secondary coil, number of turns in the primary coil, number of coils in the secondary coil
Voltage of primary coil/ voltage or secondary coil = number of turns in the primary coil/ number of turns in the secondary coil
Vp/Vs = Np/Ns
(v)
Force, mass, acceleration
Force = mass x acceleration
F = m x a
(N) (kg) (m/s^2)
Force, magnetic flux density, current, length
Force = Magnetic flux density x current x length
F = B I l
(N) (T) (A) (m)
Force, mass, change in velocity, change in time
Force = (mass x change in velocity)/ change in time
F = (m x change in v)/ change in t
(N) (kg) (m/s) (s)
Pressure, height, density, gravitational field strength
Pressure = height x density x gravitational field strength
P = h x p x g
(Pa) (m) (kg/m^3) (9.8 N/kg)
Voltage in secondary coil, current in secondary coil, voltage in primary coil, current in primary coil
Voltage in secondary coil x current in secondary oil = voltage in primary coil x current in primary coil
Vs x Is = Vp x Ip
(V) (A) (V) (A)
