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Physics Equations
alll physics equations required for OCR gcse
20
Physics
11th Grade
12/18/2017
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Term
density (kg/m3)
 Definition
mass (kg) / volume (m3)
Term
distance travelled (m)
 Definition
speed (m/s) x time (s)
Term
acceleration (m/s2)
 Definition
change in velocity (m/s) / time (s)
Term
Kinetic energy (j)
 Definition
0.5 x mass (kg) x speed/velocity2 (m/s)
Term
force (n)
 Definition
mass (kg) x acceleration (m/s2)
Term
momentum (kgs/s)
 Definition
mass (kg) x velocity (m/s)
Term
work done (j)
 Definition
force (n) x distance (m)
Term
power (w)
 Definition
work done (j) / time (s)
Term
force exerted by spring (n)
 Definition
extension (m) x spring constant (n/m)
Term
gravity force/weight (n)
 Definition
mass (kg) x gravitational field strength (n/kg)
Term
potential energy - in gravity field (j)
 Definition
mass (kg) x height (m) x gravitational field strength (n/kg)
Term
pressure (pa)
 Definition
force (n) / area (m2)
Term
moment of force (Nm)
 Definition
force (n) x distance (m)
Term
charge flow (c)
 Definition
current (a) x time (s)
Term
potential difference (v)
 Definition
current (a) x resistance (oms)
Term
energy transferred (j,kwj)
 Definition
power (w,kw) x time (s)
Term
energy transferred (j)
 Definition
charge (c) x potential difference (v)
Term
power (w)
 Definition
potential difference (v) x current (a) = current2 (a) x resistance (oms)
Term
wave speed (m/s)
 Definition
frequency (Hz) x wavelength (m)
Term
efficiency
 Definition
useful output energy transfer / input energy transfer (j)
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