Flashcards
GCSE Combined Science Equations
Cards in this deck (25)
- 1Power (electricity)P = VI
power (watts) = potential difference (volts) x current (amps) - 2Power (electricity 2)P = I^2xR
power (watts) = current^2 (amps) x resistance (ohms) - 3Energy Transferred (power)E = Pt
Energy transferred (joules) = power (watts) x time (seconds) - 4Densityp = m/v
Density (kg/m^3) = mass (kg) / volume (meters^3) - 51 Energy Transferred (charge)E = QV
Energy transferred (joules) = charge flow (coulombs) x potential difference (volts) - 62 Energy Transferred (change)E = ItV
Energy transferred (joules) = [current (amps) x time (seconds)] x potential difference (volts) - 7WeightW = mg
Weight (newtons) = mass (kg) x gravitational field strength (newtons/kg) - 8Work DoneW = fd
Work done (joules) = force (newtons) x distance (metres) - 9Force Applied to SpringF = ke
Force (newtons) = spring constant (newtons/metre) x extension (metre) - 10Distance TravelledS = vt
Distance travelled (metres) = speed (metres/second) x time (second) - 11Pressurep = F/A
Pressure (newtons/metres^2) = force [normal to surface] (newtons) / area (metres^2) - 12Moment of a ForceM = Fd
Moment (newton metres) = force [normal to direction of force] (newtons) x distance (metres) - 13Accelerationa = Δv/t
Acceleration (metres/second^2) = change in velocity (metres/second) / time (seconds) - 14Resultant ForceF = ma
Resultant force (newtons) = mass (kg) x acceleration (metres/second^2) - 15Momentump = mv
Momentum (kg m/s) = mass (kg) x velocity (m/s) - 16Kinetic EnergyKE = (1/2) m v^2
Kinetic energy (joules) = 1/2 x mass (kg) x velocity^2 (metres/second) - 17Gravitational Potential EnergyGPE = mgh
GPE (joules) = mass (kg) x gravitational field strength (newtons/kg) x height (metres) - 18Power (energy)P = E/t
Power (watts) = energy transferred (joules) / time (seconds) - 19Power (work done)P = W/t
Power (watts) = work done (joules) / time (seconds) - 20Efficiency (energy)Efficiency = useful output energy / total input energy
- 21Efficiency (power)Efficiency = useful power input / total power output
- 22Wave SpeedV = fλ
Wave speed (metres/second) = frequency (hertz) x wavelength (metres) - 23Charge FlowQ = It
Charge flow (coulombs) = current (amps) x time (seconds) - 24Potential DifferenceV = IR
Potential difference (volts) = current (amps) x resistance (ohms) - 25—
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- The equations to know for Combined Science at GCSE level.
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- Indigo Gray
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