Physics Formulae & Data

Examination Board	GCSE	IGCSE	GCE
AQA	Some formulae are expected to be memorised, others are given in the exam paper (see Specification, Section 9, Appendix A. page 101 )	Equation Sheet Insert	Physics data & formulae
Edexcel	Special for 2024	Formulae NOT given in exam Example of those GIVEN in exam	List of data, formulae & relationships
OCR	TBC	TBC	Data, Formulae & Relationships Booklet (Spec A)

	Symbol	Value	Unit
Avogadro's Constant	$N_{A}$ or $L$	$6.022 \times 10^{23}$	${mol}^{-1}$
Bohr Radius	$a_{0}$	$5.292 \times 10^{-11}$	$m$
Boltsmann's Constant	$k$	$1.381 \times 10^{-23}$	${J K}^{-1}$
The Dalton or Unified Atomic Mass Unit	$D a$ or $u$	$1.661 \times 10^{−27 [1]}$ or $931.5$	$k g$ or $M eV$
Electron mass	$m_{e}$	$9.109 \times 10^{-31}$	$k g$
Magnitude of the acceleration due to gravity at Earth's surface	$g$	9.81	$m s^{-2}$ or $N {k g}^{-1}$
Magnitude of the charge of electron (Elementary charge)	$e$	$1.602 \times 10^{-19}$	$C$
molar gas constant	$R$	$8.314$	$J K^{-1} {mol}^{-1}$
Newton's universal gravitational constant	$G$	$6.674 \times 10^{-11}$	$N m^{2} {k g}^{-2}$
Permeability of free space	$μ_{0}$	$4 π \times 10^{-7}$	$T m A^{-1}$
Permittivity of free space	$ε_{0}$	$8.854 \times 10^{-12}$	$C^{2} N^{-1} m^{-2}$ or $F m^{-1}$
	$k = \frac{1}{4 π ε_{0}}$	$8.988 \times 10^{9}$	$N m^{2} C^{-2}$
Planck's Constant	h	$6.626 \times 10^{-34}$	Js
Reduced Planck's Constant	$ℏ = \frac{h}{2 π}$	$1.055 \times 10^{-34}$	Js
Rydberg constant	R	$1.097 \times 10^{7}$	m^-1 ^[2]
Speed of Light in vacuo	c	$2.998 \times 10^{8}$	$m s^{-1}$

Class	Name	Symbol	Rest Energy $/ M eV$
photon		$γ$	0
lepton	electron neutrino	$ν_{e}$	~0
	electron/positron	$e^{\pm}$	0.510999
	muon neutrino	ν_µ	~0
	muon	µ^±	105.659
Mesons	pion	$π^{\pm}$	139.576

Physics Data & Formulae.