Appendices
Appendix B: Conversion Factors
Appendix B: Conversion Factors
| m | cm | km | |
|---|---|---|---|
| 1 meter | 1 | 102 | 10−3 |
| 1 centimeter | 10−2 | 1 | 10−5 |
| 1 kilometer | 103 | 105 | 1 |
| 1 inch | 2.540×10−2 | 2.540 | 2.540×10−5 |
| 1 foot | 0.3048 | 30.48 | 3.048×10−4 |
| 1 mile | 1609 | 1.609×104 | 1.609 |
| 1 angstrom | 10−10 | ||
| 1 fermi | 10−15 | ||
| 1 light-year | 9.460×1012 | ||
| in. | ft | mi | |
| 1 meter | 39.37 | 3.281 | 6.214×10−4 |
| 1 centimeter | 0.3937 | 3.281×10−2 | 6.214×10−6 |
| 1 kilometer | 3.937×104 | 3.281×103 | 0.6214 |
| 1 inch | 1 | 8.333×10−2 | 1.578×10−5 |
| 1 foot | 12 | 1 | 1.894×10−4 |
| 1 mile | 6.336×104 | 5280 | 1 |
Table B1 Length
Area
1cm2=0.155in.2
1m2=104cm2=10.76ft2
1in.2=6.452cm2
1ft2=144in.2=0.0929m2
Volume
1liter=1000cm3=10−3m3=0.03531ft3=61.02in.3
1ft3=0.02832m3=28.32liters=7.477gallons
1gallon=3.788liters
| s | min | h | day | yr | |
|---|---|---|---|---|---|
| 1 second | 1 | 1.667×10−2 | 2.778×10−4 | 1.157×10−5 | 3.169×10−8 |
| 1 minute | 60 | 1 | 1.667×10−2 | 6.944×10−4 | 1.901×10−6 |
| 1 hour | 3600 | 60 | 1 | 4.167×10−2 | 1.141×10−4 |
| 1 day | 8.640×104 | 1440 | 24 | 1 | 2.738×10−3 |
| 1 year | 3.156×107 | 5.259×105 | 8.766×103 | 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 | 3.281×10−2 | 2.237×10−2 |
| 1 foot/second | 0.3048 | 30.48 | 1 | 0.6818 |
| 1 mile/hour | 0.4470 | 44.70 | 1.467 | 1 |
Table B3 Speed
Acceleration
1m/s2=100cm/s2=3.281ft/s2
1cm/s2=0.01m/s2=0.03281ft/s2
1ft/s2=0.3048m/s2=30.48cm/s2
1mi/h·s=1.467ft/s2
| kg | g | slug | u | |
|---|---|---|---|---|
| 1 kilogram | 1 | 103 | 6.852×10−2 | 6.024×1026 |
| 1 gram | 10−3 | 1 | 6.852×10−5 | 6.024×1023 |
| 1 slug | 14.59 | 1.459×104 | 1 | 8.789×1027 |
| 1 atomic mass unit | 1.661×10−27 | 1.661×10−24 | 1.138×10−28 | 1 |
| 1 metric ton | 1000 |
Table B4 Mass
| N | dyne | lb | |
|---|---|---|---|
| 1 newton | 1 | 105 | 0.2248 |
| 1 dyne | 10−5 | 1 | 2.248×10−6 |
| 1 pound | 4.448 | 4.448×105 | 1 |
Table B5 Force
| Pa | dyne/cm2 | atm | cmHg | lb/in.2 | |
|---|---|---|---|---|---|
| *Where the acceleration due to gravity is 9.80665m/s2 and the temperature is 0°C | |||||
| 1 pascal | 1 | 10 | 9.869×10−6 | 7.501×10−4 | 1.450×10−4 |
| 1 dyne/centimeter2 | 10−1 | 1 | 9.869×10−7 | 7.501×10−5 | 1.450×10−5 |
| 1 atmosphere | 1.013×105 | 1.013×106 | 1 | 76 | 14.70 |
| 1 centimeter mercury* | 1.333×103 | 1.333×104 | 1.316×10−2 | 1 | 0.1934 |
| 1 pound/inch2 | 6.895×103 | 6.895×104 | 6.805×10−2 | 5.171 | 1 |
| 1 bar | 105 | ||||
| 1 torr | 1 (mmHg) | ||||
Table B6 Pressure
| J | erg | ft.lb | |
|---|---|---|---|
| 1 joule | 1 | 107 | 0.7376 |
| 1 erg | 10−7 | 1 | 7.376×10−8 |
| 1 foot-pound | 1.356 | 1.356×107 | 1 |
| 1 electron-volt | 1.602×10−19 | 1.602×10-12 | 1.182×10−19 |
| 1 calorie | 4.186 | 4.186×107 | 3.088 |
| 1 British thermal unit | 1.055×103 | 1.055×1010 | 7.779×102 |
| 1 kilowatt-hour | 3.600×106 | ||
| eV | cal | Btu | |
| 1 joule | 6.242×1018 | 0.2389 | 9.481×10−4 |
| 1 erg | 6.242×1011 | 2.389×10−8 | 9.481×10−11 |
| 1 foot-pound | 8.464×1018 | 0.3239 | 1.285×10−3 |
| 1 electron-volt | 1 | 3.827×10−20 | 1.519×10−22 |
| 1 calorie | 2.613×1019 | 1 | 3.968×10−3 |
| 1 British thermal unit | 6.585×1021 | 2.520×102 | 1 |
Table B7 Work, Energy, Heat
Power
1W=1J/s
1hp=746W=550ft·lb/s
1Btu/h=0.293W
Angle
1rad=57.30°=180°/π
1°=0.01745rad=π/180rad
1revolution=360°=2πrad
1rev/min(rpm)=0.1047rad/s
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