# Shared Flashcard Set

## Details

Physics Equations
Equations
35
Physics
Not Applicable
03/24/2018

Term
 W= mg
Definition
 weight = mass x gravitational field strength
Term
 W = Fs
Definition
 work done = force x distance (along the line of action of the force)
Term
 F = ke
Definition
 Force applied to a spring = spring constant x extension
Term
 M = Fd
Definition
 moment of a force = force x distance (normal to direction of force)
Term
 p = F/A
Definition
 pressure = force (normal to a surface)/ area (of that surface)
Term
 s = vt
Definition
 distance travelled = speed x time
Term
 a = Δv/t
Definition
 acceleration = change in velocity/time taken
Term
 F = ma
Definition
 resultant force = mass x acceleration
Term
 p = mv
Definition
 momentum = mass x velocity
Term
 Ek = 1/2 mv2
Definition
 kinetic energy = 0.5 x mass x (speed)2
Term
 Ep =mgh
Definition
 gravitational potential energy = mass x gravitational field strength (g) x height
Term
 P = E/t
Definition
 power = energy transferred/time
Term
 P = W/t
Definition
 power = work done/time
Term
 Efficiency - Energy transfer
Definition
 Efficiency = Useful output energy transfer/total input energy transfer
Term
 Efficiency - Power
Definition
 efficiency = useful power output/total power input
Term
 v = ƒλ
Definition
 wave speed = frequency x wavelength
Term
 Q = It
Definition
 charge flow = current x time
Term
 V = IR
Definition
 potential difference = current x resistance
Term
 P = VI
Definition
 power = potential difference x current
Term
 P = I2R
Definition
 power = (current)2 x resistance
Term
 E = Pt
Definition
 energy transferred = power x time
Term
 E = QV
Definition
 energy transferred = charge flow x potential difference
Term
 ρ = m/v
Definition
 density = mass/volume
Term
 p = hρg
Definition
 pressure due to a column of liquid = height of column x density of liquid x gravitational field strength (g)
Term
 v2 - u2 = 2as
Definition
 (final velocity)2 - (initial velocity)2 = 2 x acceleration x distance
Term
 F = mΔv/Δt
Definition
 force = change in momentum/time taken
Term
 Ee = 1/2 ke2
Definition
 elastic potential energy = 0.5 x spring constant x (extension)2
Term
 ΔE = mcΔθ
Definition
 change in thermal energy = mass x specific heat capacity x temperature change
Term
 period
Definition
 period = 1/frequency
Term
 magnification
Definition
 magnification = image height/object height
Term
 F = BIl
Definition
 force on a conductor (at right angles to a magnetic field) carrying a current = magnetic flux density x current x length
Term
 E = mL
Definition
 thermal energy for a change of state = mass x specific latent heat
Term
 Vp/Vs = np/ns
Definition
 potential difference across primary coil/potential difference across secondary coil = number of turns in primary coil/number of turns in secondary coil
Term
 VsIs = VpIp
Definition
 potential difference across primary coil x current in primary coil = potential difference across secondary coil x current in secondary coil
Term
 constant = pV
Definition
 (For gases) constant = pressure x volume
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