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B - Conversion Factors


m cm km
1 metre 1 102 10—3
1 centimetre 10—2 1 10—5
1 kilometre 103 105 1
1 inch 2.540 x 10—2 2.540 2.540 x 10—5
1 foot 0.3048 30.48 3.048 x 10—4
1 mile 1609 1.609 x 104 1.609
1 angstrom 10—10 8.333 x 10—2
1 fermi 10—15
1 light-year 9.460 x 1012
in. ft. mi.
1 metre 39.37 3.281 6.214 x 10—4
1 centimetre 0.3937 3.281 x 10—2 6.214 x 10—6
1 kilometre 3.937 x 104 3.281 x 103 0.6214
1 inch 1 8.333 x 10—2 1.578 x 10—5
1 foot 12 1 1.894 x 10—4
1 mile 6.336 x 104 5280 1

Table B1 Length



Area









Volume








s min h day yr
1 second 1 1.667 x 10—2 2.778 x 10—4 1.157 x 10—5 3.169 x 10—8
1 minute 60 1 1.667 x 102 6.944 x 10—4 1.901 x 10—6
1 hour 3600 60 1 4.167 x 10—2 1.141 x 10—4
1 day 8.640 x 104 1440 24 1 2.738 x 10—3
1 year 3.156 x 107 5.259 x 105 8.766 x 103 365.25 1


Table B2 Time




m / s cm / s ft / s mi / h
1 meter/second 1 102 3.281 2.237
1 centimeter/second 10—2 1 3.281 x 10—2 2.237 x 10—2
1 foot/second 0.3048 30.48 1 0.6818
1 mile/hour 0.4470 44.70 1.467 1


Table B3 Speed



Acceleration










kg g slug u
1 kilogram 1 103 6.852 x 10—2 6.024 x 1026
1 gram 10—3 1 6.852 x 10—5 6.024 x 1023
1 slug 14.59 1.459 x 104 1 8.789 x 1027
1 atomic mass unit 1.661 x 10—27 1.661 x 10—24 1.138 x 10—28 1
1 metric ton 1000


Table B4 Mass




N

dyne

lb
1 newton 1 105 0.2248
1 dyne 10—5 1 2.248 x 10—6
1 pound 4.448 4.448 x 105 1


Table B5 Force




Pa dyne / cm2 atm cmHg lb/in.2
1 pascal 1 10 9.860 x 10—6 7.501 x 10—4 1.450 x 10—4
1 dyne/centimetre2 10—1 1 9.869 x 10—7 7.501 x 10—5 1.450 x 10—5
1 atmosphere 1.013 x 105 1.013 x 106 1 76 14.70
1 centimetre mercury* 1.333 x 103 1.333 x 104 1.316 x 10—2 1 0.1934
1 pound/inch2 6.895 x 103 6.895 x 104 6.805 x 10—2 5.171 1
1 bar 105
1 torr 1 (mmHg)

*Where the acceleration due to gravity is 9.80665 m/s2 and the temperature is



Table B6 Pressure




J

erg

ft. lb
1 joule 1 107 0.7376
1 erg 10—7 1 7.376 x 10—8
1 foot-pound 1.356

1.356 x 107

1
1 electron-volt 1.602 x 10—19

1.602 x 10—12

1.182 x 10—19
1 calorie 4.186 4.186 x 107 3.088
1 British thermal unit 1.055 x 103 1.055 x 1010 7.779 x 102
1 kilowatt-hour 3.600 x 106
eV cal Btu
1 joule 6.242 x 1018 0.2389 9.481 x 10—4
1 erg 6.242 x 1011 2.389 x 10—8 9.481 x 10—11
1 foot-pound 8.464 x 1018 0.3239 1.285 x 10—3
1 electron-volt 1 3.827 x 10—20 1.519 x 10—22
1 calorie 2.613 x 1019 1 1 3.968 x 10—3
1 British thermal unit 6.585 x 1021 2.520 x 102 1


Table B7 Work, Energy, Heat



Power







Angle









Candela Citations

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