AQA GCSE Physics Paper 1 (P1 to P7) Equations

AQA GCSE Physics Paper 1 (P1 to P7) Equations

Recall may be required

1 P1 work done = force x distance (along the line of action of the force)

2 P1 kinetic energy = 0.5 x mass x (speed)2

3 P1 gravitational potential energy = mass x gravitational field strength (g) x height

4 P1 power = energy transferred / time

5 P1 power = work done / time

6 P1 efficiency = useful output energy transfer / total input energy transfer

7 P1 efficiency = useful power output / total power input

8 P4 charge flow = current x time

9 P4 potential difference = current x resistance

10 P5 power = potential difference x current

11 P5 power = (current)2 x resistance

12 P5 energy transferred = power x time

(Same as equation 4)

13 P5 energy transferred = charge flow x potential difference

14 P6 density = mass / volume

W = F s Ek = ? m v2 Ep = m g h P = E / t P = W / t Eff = Eout/Ein Eff = Pout/Pin Q = I t V = I R P = V I P = I2 R E = P t E = Q V = m / V

Given on equation sheet 15 P1 elastic potential energy = 0.5 x spring constant x (extension)2 16 P2 P6 change in thermal energy = mass x specific heat capacity x temperature change 17 P6 thermal energy for a change of state = mass x specific latent heat 18 P6 For gases: pressure x volume = constant

Ee = ? k e2 E = m c E = m L pV = constant

Standard Symbols and Units 1 time, t 2 distance, s height, h extension, e 3 mass, m 4 volume, V 5 speed, v 6 work, W energy, E 7 power, P 8 force, F 9 density, 10 pressure, p 11 gravitational field strength, g 12 charge, Q 13 current, I 14 potential difference, V 15 resistance, R 16 temperature, 17 specific latent heat, L 18 specific heat capacity, c 19 spring constant, k

second, s metre, m kilogram, kg metre cubed, m3 meter per second, m/s joule, J (or kilowatt hour, kWh) watts, W newton, N kilogram per metre cubed, kg/m3 pascal, Pa (N/m2) newton per kilogram, N/kg coulomb, C ampere or amp, A volt, V ohm, degree Celsius, C joule per kilogram, J/kg joule per kilogram per degree Celsius, J/(kgC) newton per metre, N/m

nano, n

10-9

micro,

10-6

milli, m

10-3

centi, c

10-2

kilo, k

103

mega, M

106

giga, G

109

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