m | cm | km | |
1 metru | 1 | 102 | 10−3 |
1 centimetru | 10−2 | 1 | 10−5 |
1 kilometru | 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 milă | 1609 | 1.609×105 | 1.609 |
1 angstrom | 10−10 | ||
1 fermi | 10−15 | ||
1 an-lumină | 9.460×1012 | ||
in. | ft | mi | |
1 metru | 39.37 | 3.281 | 6.214×10−4 |
1 centimetru | 0.3937 | 3.281×10−2 | 6.214×10−6 |
1 kilometru | 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 milă | 6.336×104 | 5280 | 1 |
Tabel B1 Lungime
Aria
1cm2=0.155in2
1m2=104cm2=10.76ft2
1in2=6.452cm2
1ft2=144in2=0.0929m2
Volum
1litru=1000cm3=10−3m3=0.03531ft3=61.02in3
1ft3=0.02832m3=28.32litri=7.477galoane
1galon=3.788litri
s | min | h | day | yr | |
1 secundă | 1 | 1.667×10−2 | 2.778×10−4 | 1.157×10−5 | 3.169×10−8 |
1 minut | 60 | 1 | 1.667×10−2 | 6.944×10−4 | 1.901×10−6 |
1 oră | 3600 | 60 | 1 | 4.167×10−2 | 1.141×10−4 |
1 zi | 8.640×104 | 1440 | 24 | 1 | 2.738×10−3 |
1 an | 3.156×107 | 5.259×105 | 8.766×103 | 365.25 | 1 |
Tabel B2 Timp
m/s | cm/s | ft/s | mi/h | |
1 metru/secundă | 1 | 102 | 3.281 | 2.237 |
1 centimetru/secundă | 10−2 | 1 | 3.281×10−2 | 2.237×10−2 |
1 foot/secundă | 0.3048 | 30.48 | 1 | 0.6818 |
1 mile/oră | 0.4470 | 44.70 | 1.467 | 1 |
Tabel B3 Viteza
Accelerația
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 unitate atomică de masă | 1.661×10−27 | 1.661×10−24 | 1.138×10−28 | 1 |
1 tonă metrică | 1000 |
Tabel B4 Masa
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 |
Tabel B5 Forța
Pa | dyne/cm2 | atm | cmHg | lb/in.2 | |
*Unde accelerația datorită gravității este 9.80665m/s2 și temperatura este 0°C | |||||
1 pascal | 1 | 10 | 9.869×10−6 | 7.501×10−4 | 1.450×10−4 |
1 dyne/centimetru2 | 10−1 | 1 | 9.869×10−7 | 7.501×10−5 | 1.450×10−5 |
1 atmosferă | 1.013×105 | 1.013×106 | 1 | 76 | 14.70 |
1 centimetru mercur* | 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) |
Tabel B6 Presiunea
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 unitate termică britanică | 1.055×103 | 1.055×1010 | 7.779×102 |
1 kilowat-oră | 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 unitate termică britanică | 6.585×1021 | 2.520×102 | 1 |
Tabel B7 Lucru mecanic, Energie, Căldură
Putere
1W=1J/s
1hp=746W=550ft⋅lb/s
1Btu/h=0.293W
Unghi
1rad=57.30°=180°/π
1°=0.01745rad=π/180rad
1revoluție=360°=2πrad
1rev/min(rpm)=0.1047rad/s
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