Summary A-level Physics data and formulae

Aqa June 2017




A-level Physics data and formulae
For use in exams from the June 2017 Series onwards
DATA - FUNDAMENTAL CONSTANTS AND VALUES
Quantit Symbol Value Units
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 ℎ 6.63  10–34 Js
electron the Planck constant 𝐺 6.67  10–11 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 9.11  10–31
𝑚e kg
constant
𝑒
the Wien constant 1.76  1011 C kg–1
𝑚e
electron rest mass
(equivalent to 5.5 × 10–4 𝑚p 1.67(3)  10–27 kg
u) 𝑒
9.58  107 C kg–1
magnitude of electron charge/mass
𝑚p

𝑚n 1.67(5)  10–27 kg
ratio proton rest mass
(equivalent to 1.00728 u)
𝑔 9.81 N kg–1
proton charge/mass ratio 𝑔 9.81 m s–2

neutron rest mass u 1.661  10–27 kg
(equivalent to 1.00867
u)
gravitational field strength
acceleration due to gravity
atomic mass unit
(1u is equivalent to 931.5 MeV)


ALGEBRAIC EQUATION GEOMETRICAL EQUATIONS

2 arc length =r𝜃
quadratic equation  b  b  4ac
x = 2r
2a
Aqa June 2017

, ASTRONOMICAL DATA circumference of circle = r2
area of circle = 2rh
Body Mass/kg Mean radius/m
curved surface area of
Sun 1.99 × 1030 6.96 × 108 cylinder = 4r2
surface area of sphere 4
Earth 5.97 × 1024 6.37 × 106
= r3
3
volume of sphere




2 Version
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