الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

Appendices
SI Derived Units expressed in terms of base units
Quantity Name Symbol
area square meter m 2
volume cubic meter m 3
speed, velocity meter per second m/s
acceleration meter per second square m/s 2
wave number 1 per meter m -1
density, mass density kilogram per cubic meter kg/m 3
specific volume cubic meter per kilogram m 3 /kg
current density ampere per square meter A/m 2
magnetic field strength ampere per meter A/m
concentration mole per cubic meter mol/m 3
luminance candela per square meter cd/m 2
SI Derived Units with special names
Quantity Name Symbol
Expression
in terms of
other units
Expression
in terms of
SI base units
frequency hertz Hz s -1
force newton N m kg s -2
pressure, stress pascal Pa N/m 2 m -1 kg s -2
energy, work, quantity
joule J N m m 2 kg s -2
of heat
power, radiation flux watt W J/s m 2 kg s -3
electric charge coulomb C s A
electric potential
volt V W/A m 2 kg s -3 A -1
difference
electromotive force volt V W/A m 2 kg s -3 A -1
capacitance farad F C/V m -2 kg -1 s 4 A 2
electric resistance ohm V/A m 2 kg s -3 A -2
electric conductance siemens S A/V m -2 kg -1 s 3 A 2
magnetic flux weber Wb V s m 2 kg s -2 A -1
magnetic flux density tesla T Wb/m 2 kg s -2 A -1
inductance herny H Wb/A m 2 kg s -2 A -2
temperature
degree
celsius
o C
K
luminance flux lumen lm cd sr
luminance lux lx lm/m 2 m -2 cd sr
activity of radionuclide becquerel Bq s -1
absorbed dose gray Gy J/kg m 2 s -2
dose equivalent sievert Sv J/kg m 2 s -2
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