Edexcel GCSE Physics Equations

This document contains all equations needed for Edexcel GCSE Physics

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  • Created on: 19-06-11 12:32
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January 2011
Arun Nair 11C5Equations for IGCSE PhysicsSunday 9th
Topic / Notes Word Formula Letter Formula Units
Topic 1 Solids, Density = mass volume D = mv Density ­ p
Liquids and Gases Mass ­ grams (g)
)
Volume ­ centimetres cubed (cm3
Pressure = Force area P = F a Pressure ­ Pascal (Pa)
Force ­ Newton (N)
Area ­ centimetres squared (cm2 )
Pressure Difference = height x density x g P = h x p x g Pressure Difference ­ Pascal (Pa)
Height ­ meters (m)
Density ­ rho ( p)
Gravitational field strength g
Boyle's Law Pressure 1 x Volume 1 = Pressure 2 x P1V1 = P2V2 Pressure ­ Pascal (Pa)
Volume 2 Volume ­ centimetres cubed (cm3 )
Topic 2 Energy Efficiency = Useful energy output Total E = U / T All in Joules (J)
Energy output
Work done = Force x Distance Moved W =F x D Work Done = Joules (J)
Force = Newton (N)
Distance Moved = (m)
Gravitational Potential Energy = mass x g x GPE = mgh GPE ­ Joules (J)
height Mass ­ grams (g)
Gravitational Field Strength ­ g
Height ­ meters (m)
Kinetic Energy = ½ x mass x speed squared
KE = ½ mv2 KE ­ Joules (J)
Mass ­ grams (g)
Speed ­ minutes per second (m/s)
Power = Work Done Time taken P = W t Power ­ Watts (W)
Work done ­ Joules (J)
Time Taken ­ seconds (s)
Topic 3 ­ Forces and Average Speed = Distance Moved Time S = D t Average Speed ­ minutes per second
Motion Taken (m/s or ms1 )
Distance Moved ­ meters (m)
Time Taken ­ seconds (s)
Acceleration = change in velocity time A = (v ­ u) t Acceleration ­ minutes per second
taken squared (ms2 )
Change in Velocity minutes per
second (m/s or ms1 )
Time taken ­ Seconds (s)
Force = Mass x Acceleration F = ma Force ­ Newton (N)
Mass ­ grams (g)
Acceleration ­ minutes per second
squared (ms2 )
Weight = Mass x g Weight ­ Newton (N)
Mass ­ grams (g)
Gravitational Field Strength ­ g

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January 2011
Arun Nair 11C5Equations for IGCSE PhysicsSunday 9th
Moment = Force x Perpendicular distance M = F x Pd Moment Torque
from pivot Force ­ Newton (N)
Perpendicular Distance ­ meters (m)
Astronomy Orbital Speed = 2 x x r Time Period 2 r T R ­ radius (cm)
T ­ Time Period seconds (s)
Electricity Power = Current x Voltage P = I x V Power ­ Watts (W)
Current ­ Amperes (A)
Voltage ­ Volts (V)
Energy Transferred = Current x Voltage…read more

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