494 Appendix A. Global list of symbols and units[[Student version, January 17, 2003]]
vacuum, would produce a magnetic force between these conductors equal to 2· 10 −^7 newton
permeter of length.
5.Thermodynamic Temperature - The kelvin (K)isdefined as the fraction 1/ 273 .16 of the
thermodynamic temperature of the triple point of water counting up from absolute zero.Prefixes The following prefixes modify the base units (and other units):
giga (G)=10^9
mega (M)=10^6
kilo (k)=10^3
centi (c)=10−^2
milli (m)=10−^3
micro (μ)=10−^6
nano (n)=10−^9
pico (p)=10−^12
femto (f)=10−^15
SI derived units
1.volume - the liter (L)equals 10−^3 m^3.
2.force - the newton (N)equals 1kg·m·s−^2.
3.energy - the joule (J)equals 1N·m=1kg·m^2 ·s−^2.
4.power -the watt (W)equals 1Js−^1 =1kg·m^2 ·s−^3.
5.pressure - the pascal (Pa)equals 1N/m^2 =1kg·m−^1 ·s−^2.
6.charge - the coulomb (coul)equals 1A·s.
7.electrical potential - the volt (volt)equals 1J·s−^1 ·A−^1 =1m^2 ·kg·s−^3 ·A−^1. Its derived
forms are abbreviatedmVand so on.
8.capacitance - the farad (F)equals 1coul/volt=1s^4 ·A^2 ·kg−^1 ·m−^2.
9.resistance - the ohm (Ω)equals 1J·scoul−^2 =1volt·A−^1 =1m^2 ·kg·s−^3 ·A−^2.
10.conductance - the siemens (S)equals 1Ω−^1 =1A/volt=1s^3 A^2 m−^2 kg−^1.Traditional but non-SI units
1.length - the ̊Angstrom unit ( ̊A) equals 0. 1 nm.
2.time - the svedberg equals 10−^13 s.
3.energy - the calorie (cal)equals 4. 184 J.1kcalmole−^1 =0. 043 eV=7· 10 −^21 J=4. 2 kJmole−^1.
4.energy - the electron volt (eV)equalse×(1volt)= 1. 60 · 10 −^19 J=96. 5 kJ/mole.
5.energy - the erg (erg)equals 10−^7 J.
6.pressure - the atmosphere (atm)equals 1. 01 · 105 Pa.
7.pressure - 752mmof mercury = 10^5 Pa.
8.viscosity - the poise (P)equals 1erg·s·cm−^3 =0. 1 Pa·s.
9.number density - A 1Msolution has a number density of 1 mole·L−^1 =1000 mole·m−^3.