Summary A-level Physics data and formulae

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A-level Physics data and formulae
For use in exams from the June 2017 Series onwards
DATA - FUNDAMENTAL CONSTANTS AND VALUES
Quantit Symb Value Unit
ol s
y speed of light in
𝑐 3.00  108 m s–1
vacuo permeability of
𝜇0 4  10–7 H m–1
free space permittivity
𝜀0 8.85  10–12 F m–1
of free space
𝑒 1.60  10–19 C
magnitude of the charge of –34
ℎ 6.63  10 Js
electron the Planck constant –11
𝐺 6.67  10 N m2 kg–2
gravitational
𝑁A 6.02  1023 mol–1
constant the
𝑅 8.31 J K–1 mol–1
Avogadro constant
𝑘 1.38  10–23 J K–1
molar gas constant
σ 5.67  10–8 W m–2 K–4
the Boltzmann
𝛼 2.90  10–3 mK
constant the Stefan
constant 𝑚e 9.11  10–31 kg

the Wien constant 𝑒
1.76  1011 C kg–1
electron rest mass 𝑚e
(equivalent to 5.5 × 10–4
𝑚p 1.67(3)  10–27 kg
u)
𝑒
magnitude of electron charge/mass 9.58  107 C kg–1
𝑚p
ratio proton rest mass 1.67(5)  10–27
𝑚n kg
(equivalent to 1.00728 u)
𝑔 9.81 N kg–1
proton charge/mass ratio
𝑔 9.81 m s–2
neutron rest mass
(equivalent to 1.00867 u 1.661  10–27 kg
u)
gravitational field
strength acceleration
due to gravity atomic
mass unit
(1u is equivalent to 931.5 MeV)


ALGEBRAIC EQUATION GEOMETRICAL EQUATIONS
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, 2
arc length =r𝜃
quadratic equation  b  b  4ac
x circumference of circle = 2r
2a
ASTRONOMICAL DATA area of circle = r2
curved surface area of = 2rh
Body Mass/kg Mean
cylinder
radius/m
Sun 1.99 × 1030 6.96 × 108 surface area of sphere = 4r2
4
volume of sphere = r3
Earth 5.97 × 1024 6.37 × 106 3




2 Version
1.7