Forumlae for Nuffield Physics
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Formula	Alternative	Unit
p = F/A	pressure = force/area	Pa or Nm-2
v = d/t	speed = distance/(time taken)	m s-1
p1V1 /T1 = p2V2 /T2
W = Fs	Work done = Force  distance moved in the direction of the force	J
P = W/t	Power = energy transformed/(time taken)	W or Js-1
E = Pt	Electrical energy = Power  time  Electrical energy in kWh = Power in kW  time in hours	J or kWh
E = VIt	electrical energy = potential difference  current  time	J
	moment of a force about a pivot = force  perp distance from force to pivot	Nm
	sum of clockwise moments = sum of anticlockwise moments	Nm
a = Dv/Dt	acceleration = change in velocity/change in time	ms-2
F = ma	Force = mass  acceleration (constant mass)	N
c = f l	wave speed = frequency  wavelength	ms-1
Q = It	Charge = current  time (constant current)	C
V = IR	potential difference = current  resistance	V
P = IV	electric power = current  potential difference	W or Js-1
W = mg	weight = mass  gravitational field strength	N
Ek = ½ mv2	kinetic energy = ½ mass  velocity2	J
Ep = mgDh	increase in gravitational potential energy = mass  g  change in height  (Dh small enough that g is constant)	J
p = mv	momentum = mass  velocity	kg m s-1
F = m v2 / r	centripetal force = mass  velocity2/radius	N
V = W/Q	potential difference = energy transformed/charge transferred	V
R = V/I	Resistance of element = potential difference across element/current	ohms
R = rl/A	resistance = resistivity  length/area	ohms
C = Q/V	capacitance = charge/potential difference	F
pV = nRT	Ideal gas law	J mol-1
F = q1q2/4pe0r2	electric force (radial)	N
E = F/q = V/d	electric field strength for uniform field	V m-1
E = q/4pe0r2	electric field strength for radial field	V m-1
V = q/4pe0r	electric potential at a point	V
F = -Gm1m2/r2	gravitational force	N
g = -Gm/r2	gravitational field strength radial	N kg-1
Vg = -Gm/r	gravitational potential at a point	J kg-1

Other Notes in this Category

1. Acids and Bases
2. Aqueous Chemistry
3. Chlorine
4. Definitions of Element, Mixture and Compound
5. Definitions of Relative Atomic Mass, Isotope, Atomic No.
6. Forumlae for Nuffield Physics
7. Radiation: properties of different types of radiation

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