Revision:Formulae for Nuffield Physics

Register

About Us | Help | Sign in

Create New Article | Editing Help

Advanced Search

Edit \| Hide
Welcome \| Study Help \| A Levels \| Applications, UCAS etc. \| University Discussion \| Careers \| General Discussion \| Have Your Say \| Health & Relationships \| Debate & Discussion \| Technology \| Sport \| Entertainment \| Chat \| Ask A Moderator

Revision:Formulae for Nuffield Physics

From The Student Room

Jump to:navigation, search

TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Physics > Formulae for Nuffield Physics

Formula	Alternative	Unit
$p = \frac{F}{A}$	pressure = force/area	Pa or Nm^-2
$v = \frac{d}{t}$	speed = distance/(time taken)	m s^-1
$\frac{p_1V_1}{T_1} = \frac{p_2V_2}{T_2}$
	Work done = Force distance moved in the direction of the force	J
$P = \frac{W}{t}$	Power = energy transformed/(time taken)	W or Js^-1
	Electrical energy = Power time Electrical energy in kWh = Power in kW time in hours	J or kWh
	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
$a = \frac{Dv}{Dt}$	acceleration = change in velocity/change in time	ms^-2
	Force = mass acceleration (constant mass)	N
$c = \frac{f}{\lambda}$	wave speed = frequency wavelength	ms^-1
	Charge = current time (constant current)	C
	potential difference = current resistance	V
	electric power = current potential difference	W or Js^-1
	weight = mass gravitational field strength	N
$E_k = \frac{1}{2}mv^2$	kinetic energy = ½ mass velocity²	J
	increase in gravitational potential energy = mass g change in height (Dh small enough that g is constant)	J
	momentum = mass velocity	kg m s^-1
$F = \frac{mv^2}{r}$	centripetal force = mass velocity²/radius	N
$V = \frac{W}{Q}$	potential difference = energy transformed/charge transferred	V
$R = \frac{V}{I}$	Resistance of element = potential difference across element/current	ohms
$R = \frac{rl}{A}$	resistance = resistivity length/area	ohms
$C = \frac{Q}{V}$	capacitance = charge/potential difference	F
	Ideal gas law	J mol^-1
$F = \frac{q_1q_2}{4pe_0r^2}$	electric force (radial)	N
$E = \frac{F}{q} = \frac{V}{d}$	electric field strength for uniform field	V m^-1
$E = \frac{q}{4pe_0r^2}$	electric field strength for radial field	V m^-1
$V = \frac{q}{4pe_0r}$	electric potential at a point	V
$F = \frac{-Gm_1m_2}{r^2}$	gravitational force	N
$g = \frac{-Gm}{r^2}$	gravitational field strength radial	N kg^-1
$Vg = \frac{-Gm}{r}$	gravitational potential at a point	J kg^-1