IB Physics
Data Booklet Summary

All constants and formulas from the IB Physics data booklet. Quick reference for exams.

Physical Constants

Fundamental Constants

ConstantValueUnit
Speed of light (c)3.00 × 10⁸m s⁻¹
Planck's constant (h)6.63 × 10⁻³⁴J s
Elementary charge (e)1.60 × 10⁻¹⁹C
Electron mass (mₑ)9.11 × 10⁻³¹kg
Proton mass (mₚ)1.67 × 10⁻²⁷kg

Mechanics

Kinematics

v = u + at
s = ut + ½at²
v² = u² + 2as
s = ½(u + v)t

Forces

F = ma
W = mg
F = kx (Hooke's law)
p = mv (momentum)

Energy

KE = ½mv²
PE = mgh
Work = Fd cos θ
Power = W/t = Fv

Waves

Wave Equations

v = fλ
T = 1/f
v = √(T/μ) (string)
v = √(B/ρ) (fluid)

Optics

n₁ sin θ₁ = n₂ sin θ₂
1/f = 1/v + 1/u
M = -v/u (magnification)

Electricity

Circuits

V = IR (Ohm's law)
P = IV = I²R = V²/R
Rₛ = R₁ + R₂ + ... (series)
1/Rₚ = 1/R₁ + 1/R₂ + ... (parallel)

Fields

F = kQq/r² (Coulomb)
E = F/q = kQ/r²
V = Ed (uniform field)
C = Q/V = ε₀A/d

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