Page 323 - Valve Selection Handbook

Appendix D: International System of Units (SI) 301

Table D-4
Some Derived Units Having Special Names
force newton 1 N = 1 kg•m/s 2
N
pressure pascal 1 Pa = IN/m 2 = 1 kg m•s
stress Pa
2
energy joule 1J = 1N•m = 1 kg•m /s 2
work J
quantity of heat
radiant energy
2 3
power watt 1W = 1 J/s = 1 kg•m s
radiant flux W
2
potential difference volt 1V = 1 W/A = 1 kg•m /A•s 3
electromotive force V
electric potential

Table D-5
Some Derived Units Expressed in Terms of Other Derived Units

dynamic viscosity Pa•s — kg/m•s
2 2
entropy J/K = kg•m s •K
2
2
heat capacity J/K = kg•m /s •K
heat flux density W/m2 = kg/s 3
2
2
molar energy J/mol = kg•m /s •mol
2
molar entropy J/mol•K = kg•m •K mol
2
2
molar heat capacity J/mol•K = kg•m /s •Kmol
2
moment of force N•m = kg•m /s 2
3
2
radiant intensity W/sr = kgm /s sr
2
specific energy J/kg = m /s 2
2 2
specific entropy J/kg•K = m s •K
2 2
specific heat capacity J/kg•K = m /s •K
2
specific latent heat J/kg = m /s 2
surface tension N/m = kg/s 2
2
torque N•m = kg•m /s 2