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Physics Crib Sheet 6 - Conversion Factors
Angle
1 degree<°> = 1.745x10-2 rad1 rad = 57.31 degree<°>
1 grad = 1.571x10-2 rad1 rad = 63.65 grad
1 minute<"> = 2.909x10-4 rad1 rad = 3.438x103 minute<">
1 second = 4.848x10-6 rad1 rad = 2.063x105 second
Area
1 acre<acre> = 4.047x103 m21 m2 = 2.471x10-4 acre<acre>
1 barn<b> = 10-28 m21 m2 = 1028 barn<b>
1 hectare<ha> = 104 m21 m2 = 10-4 hectare<ha>
1 square yard = 0.836 m21 m2 = 1.196x10 square yard
Current
1 biot<Bi> = 10 A1 A = 0.1 biot<Bi>
Energy
1 British Thermal Unit<BTU> = 1.055x103 J1 J = 9.479x10-4 British Thermal Unit<BTU>
1 calorie<cal> = 4.184 J1 J = 0.239 calorie<cal>
1 erg<erg> = 10-7 J1 J = 107 erg<erg>
1 kilowatt hour<kWh> = 3.6x106 J1 J = 2.778x10-7 kilowatt hour<kWh>
1 therm = 1.055x108 J1 J = 9.479x10-9 therm
Force
1 dyne<dyn> = 10-5 N1 N = 105 dyne<dyn>
Length
1 angstrom<Å> = 1.496x1011 m1 m = 6.684x10-12 angstrom<Å>
1 cable = 1.852x102 m1 m = 5.4x10 cable
1 cable(RN) = 1.853x102 m1 m = 5.397x10-3 cable(RN)
1 fathom = 1.829 m1 m = 0.5467 fathom
1 foot<ft> = 0.3048 m1 m = 3.281x10 foot<ft>
1 furlong = 2.012x102 m1 m = 4.97x10-3 furlong
1 inch<"> = 2.54x10-2 m1 m = 39.37 inch<">
1 league = 4.827x106 m1 m = 2.072x10-7 league
1 league(nautical) = 4.83x103 m1 m = 2.07x10-4 league(nautical)
1 light year = 9.462x1015 m1 m = 1.057x10-16 light year
1 micron<µ> = 10-6 m1 m = 106 micron<µ>
1 mil<mil> = 2.54x10-5 m1 m = 3.937x104 mil<mil>
1 mile<m> = 1.609x103 m1 m = 6.215x10-4 mile<m>
1 mile(nautical) = 1.852x103 m1 m = 5.4x10-4 mile(nautical)
1 yard<yd> = 0.9144 m1 m = 1.094x10 yard<yd>
Mass
1 atomic mass unit<u> = 1.611x10-24 g1 g = 6.207x1023 atomic mass unit<u>
1 carat = 0.2 g1 g = 5x10 carat
1 dram = 1.772 g1 g = 0.5643 dram
1 dram(Apothacaries) = 3.888 g1 g = 0.2572 dram(Apothacaries)
1 grain = 6.481x10-2 g1 g = 15.43 grain
1 hundredweight<cwt> = 5.08x104 g1 g = 1.969x10-5 hundredweight<cwt>
1 ounce<oz> = 28.35 g1 g = 3.527x10-2 ounce<oz>
1 ounce(Troy) = 31.1 g1 g = 3.215x10-2 ounce(Troy)
1 pennyweight = 1.555 g1 g = 0.6431 pennyweight
1 pound<lbav> = 4.536x102 g1 g = 2.205x10-3 pound<lbav>
1 pound(Troy) = 3.732x102 g1 g = 2.68x10-3 pound(Troy)
1 quintal = 1.016x105 g1 g = 9.843x10-6 quintal
1 scruple = 1.296 g1 g = 0.7716 scruple
1 short ton = 9.072x105 g1 g = 1.102x10-6 short ton
1 stone<st> = 6.35x103 g1 g = 1.575x10-4 stone<st>
1 ton<t> = 1.016x106 g1 g = 9.843x10-7 ton<t>
1 tonne<t> = 106 g1 g = 10-6 tonne<t>
Power
1 horsepower<hp> = 7.457x102 watt1 watt = 1.341x10-3 horsepower<hp>
Pressure
1 atmosphere<atm> = 1.013x105 Pa1 Pa = 9.872x10-6 atmosphere<atm>
1 bar<bar> = 105 Pa1 Pa = 10-5 bar<bar>
1 mm mercury<mm Hg> = 1.333x102 Pa1 Pa = 7.502x10-3 mm mercury<mm Hg>
Radioactivity
1 curie<Ci> = 3.7x1010 Bq1 Bq = 2.703x10-11 curie<Ci>
Time
1 century = 3.156x109 s1 s = 3.169x10-10 century
1 day = 8.64x104 s1 s = 1.157x10-5 day
1 decade = 3.156x108 s1 s = 3.169x10-9 decade
1 fortnight = 1.21x106 s1 s = 8.264x10-7 fortnight
1 hour = 3.6x103 s1 s = 2.778x10-4 hour
1 millenium = 3.156x1010 s1 s = 3.169x10-11 millenium
1 minute = 60 s1 s = 1.667x10-2 minute
1 month = 2.63x106 s1 s = 3.802x10-7 month
1 week = 6.048x105 s1 s = 1.653x10-6 week
1 year = 3.156x107 s1 s = 3.169x10-8 year
Velocity
1 km per hour<kph> = 0.278 m s-11 m s-1 = 3.6x10 km per hour<kph>
1 knot<kn> = 0.5144 m s-11 m s-1 = 1.944x10 knot<kn>
1 mile per hour<mph> = 0.447 m s-11 m s-1 = 2.237x10 mile per hour<mph>
Volume
1 bushel = 18.18 L1 L = 5.501x10-2 bushel
1 fluid dram = 3.697x10-3 L1 L = 2.705x102 fluid dram
1 fluid ounce<fl oz> = 2.96x10-2 L1 L = 33.78 fluid ounce<fl oz>
1 gallon<gal> = 4.546 L1 L = 0.22 gallon<gal>
1 gallon(US)<gall(US)> = 3.786 L1 L = 0.2641 gallon(US)<gall(US)>
1 gill = 0.148 L1 L = 6.757x10 gill
1 minim = 6.16x10-5 L1 L = 1.623x104 minim
1 peck = 9.092 L1 L = 0.11 peck
1 pint<pt> = 0.5682 L1 L = 1.76x10 pint<pt>
1 quart = 1.136 L1 L = 0.8803 quart
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