topic 1 - key concepts

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Created by
sophie

Cards (4)

  • SI Units

    • Metre, m
    • Kilogram, kg
    • Second, s
    • Ampere, A
    • Kelvin, K
    • Mole, mol
    • Volt, V
    • Frequency, hertz, Hz
    • Force, newton, N
    • Energy, joule, J
    • Power, watt, W
    • Pressure, pascal, Pa
    • Charge, coulomb, C
    • Resistance, ohm, Ω
    • Magnetic Flux Density, tesla, T
  • Prefixes

    • giga G x 10^9 1 billion
    • mega M x 10^6 1 million
    • kilo k x 10^3 1 thousand
    • centi c x 10^-2 1 hundredth
    • mili m x 10^-3 1 thousandth
    • micro µ x 10^-6 1 millionth
    • nano n x 10^-9 1 billionth
  • Equations to Learn

    1. distance = speed × time
    2. a = (v - u) / t
    3. F = ma
    4. weight = mg
    5. ∆GPE = mg∆h
    6. KE = 1/2 mv^2
    7. efficiency = usefully energy output / total energy input
    8. wave speed = v = fλ
    9. wave speed = v = x/t
    10. work done = force × distance (moved in the direction of the force) = E = Fd
    11. Power = work done / time = energy transferred / time taken
    12. Moment of force = force × perpendicular distance
    13. energy transferred = charge moved × pd = E = QV
    14. charge = current × time = Q = It
    15. Voltage = Current × Resistance = V = IR
    16. Electrical Power = current × pd = P = IV
    17. Electrical power = current^2 × resistance = P = I^2R
    18. density = mass / volume = ρ = m/V
    19. force on spring = spring constant × extension = F = k∆x
    20. pressure = force / area = P = F/A
  • Equations Given