AS-Level & A-Level OCR 2025 Physics B Data, Formulae and Relationships Booklet

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AS-Level & A-Level OCR 2025 Physics B Data, Formulae and
Relationships Booklet

AS Level Physics B (H157)

A Level Physics B (H557)

Data, Formulae and Relationships Booklet




CST990
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Data, Formulae and Relationships
Data

Values are given to three significant figures, except where more – or fewer – are useful.

Physical constants

speed of light c 3.00  108 m s-1

permittivity of free space ε0 8.85  10-12 C2 N-1 m-2 (or F m-1)

1
electric force constant k 8.98  109 N m2 C-2 ( 9  109 N m2 C-2)
4ε0

permeability of free space 0 4  10-7 N A-2 (or H m-1)

charge on electron –e –1.60  10-19 C

mass of electron me 9.11  10-31 kg = 0.000 55 u

mass of proton mp 1.673  10-27 kg = 1.007 3 u

mass of neutron mn 1.675  10-27 kg = 1.008 7 u

mass of alpha particle m 6.646  10-27 kg = 4.001 5 u

Avogadro constant L, NA 6.02  1023 mol-1

Planck constant h 6.63  10-34 J s

Boltzmann constant k 1.38  10-23 J K-1

molar gas constant R 8.31 J mol-1 K-1

gravitational force constant G 6.67  10-11 N m2 kg-2




© OCR 2025 Physics B (Advancing Physics)