0195136047.pdf

836 APPENDIX C

TABLE C.2Prefixes

Prefix Symbol Meaning

exa E 1018

peta P 1015

tera T 1012

giga G 109

mega M 106

kilo k 103

hecto h 102

deka da 101

deci d 10 –1

centi c 10 –2

milli m 10 –3

micro μ 10 –6

nano n 10 –9

pico p 10 –12

femto f 10 –15

alto a 10 –18

TABLE C.3Physical Constants

Quantity Symbol Value Unit

permeability constant μ 0 1.257× 10 –6 H/m

permittivity constant ε 0 8.854× 10 –12 F/m

gravitational acceleration constant g 0 9.807 m/s^2

speed of light in a vacuum c 0.2998× 109 m/s

charge of an electron q -1.602× 10 –19 C

electron mass m 9.108× 10 –31 kg

Boltzmann constant k 1.381× 10 –23 J/K

TABLE C.4Conversion Factors

Physical Quantity SI Unit Equivalents

length 1 meter (m) 3.281 feet (ft)

39.37 inches (in)

angle 1 radian (rad) 57.30 degrees

mass 1 kilogram (kg) 0.0685 slugs

2.205 pounds (lb)

35.27 ounces (oz)

force 1 newton (N) 0.2248 pounds (lbf)

7.233 poundals

0.1 10^6 dynes

102 grams

torque 1 newton-meter (Nm) 0.738 pound-feet (lbf-ft)

141.7 oz-in

10 10^6 dyne-centimeter

10.2 10^3 gram-centimeter^2

moment of inertia 1 kilogram-meter^2 (kgm^2 ) 0.738 slug-feet^2

23.7 pound-feet^2 (lb-ft^2 )

54.6 10^3 ounce-inches^2

10 10^6 gram-centimeter^2 (g·cm^2 )