A.2 Derived SI Units

Quantity	SI Unit	Symbol	Formula
activity of radionuclides	becquerel	Bq	s^–1
capacitance	farad	F	C V^–1
electric potential	volt	V	W A^–1
electric resistance	ohm	Ω	V A^–1
energy, work, quantity of heat	joule	J	N · s
force	newton	N	kg · m s^–2
frequency	hertz	Hz	s^–1
power, radiant flux	watt	W	J s^–1
pressure	pascal	Pa	N m^–2
quantity of electricity, electric charge	coulomb	C	A · s

acceleration	meter per second squared	m s^–2
area	square meter	m²
density, mass	kilogram per cubic meter	kg m^–3
entropy	joule per kelvin	J K^–1
heat capacity	joule per kelvin	J K^–1
molar energy	joule per mole	J mol^–1
molar entropy	joule per mole-kelvin	J mol^–1 K^–1
specific energy	joule per kilogram	J kg^–1
specific entropy	joule per kilogram-kelvin	J kg^–1 K^–1
specific volume	cubic meter per kilogram	m³ kg–1
specific-heat capacity	joule per kilogram-kelvin	J kg^–1 K^–1
surface tension	newton per meter	N m^–1
velocity	meter per second	m s^–1
viscosity, dynamic	pascal-second	Pa · s
viscosity, kinematic	square meter per second	m² s^–1
volume	cubic meter	m³
wavenumber	1 per meter	1 m^–1