physics formulas

• Resistance (R) = V/I
• density (g/m3) = mass (g) x volume (m3)

  p=m/v
• change in thermal energy = mass x specific heat capacit x change in temp
• thermal energy for a change in state = specific latent heat x mass
• pressure due to a column of liquid = height (of column) x density x g (9.8 or 10)
• distance (m) = speed (m/s) x time (s)
• acceleration = change in velocity x time

  a = (v-u)/t
• final velocity2 - initial velocity2 = 2 x acceleration x distance
• (v2)-(u2) = 2ad
• kinetic energy = 0.5 x mass x speed squared

  KE = 1/2 x m x v2
• force = mass x acceleration
• f=m x a
• momentum = mass x velocity
• p=m x v
• work done = force x distance
• power = work done / time
• force exerted by a spring = extension x spring constant (N/m)
• energy transferred in stretching = 0.5 x spring constant x (extension)2
• gravitational potential energy = mass x g x height
• gpe = mgh
• pressure = force/ area
• p = f/a
• moment = force x distance
• change = current x time
• Q (coulombs) = I (A) x t (s)
• pd (v) = resistance (ohms) x current (amps)
• V=I x R
• V = E/Q
• pd = energy transferred/ charge
• Power = current x voltage
• p = I x V
• Power = (current)2 x resistance (ohms)
• P= I squared x R
• Energy transferred = power x time
• Force (on a conductor carrying current) = magnetic flux density x current x length
• Vp/Vs = Np/Ns
• wave speed = frequency x wavelength
• v (m/s) = λ (m) x f (Hz)
• f = 1/T (time period)
• T = 1/f (frequency)