fendpaper.qxd11/4/1012:05 PMPage 2Systems of Units. Some Important Conversion FactorsThe most important systems of units are shown in the table below. The mks system is also known asthe International System of Units (abbreviated SI), and the abbreviations sec (instead of s),gm (instead of g), and nt (instead of N) are also used.System of unitsLengthMassTimeForcecgs systemcentimeter (cm)gram (g)second (s)dynemks systemmeter (m)kilogram (kg)second (s)newton (nt)Engineering systemfoot (ft)slugsecond (s)pound (lb)1 inch (in.) ⫽ 2.540000 cm1 foot (ft) ⫽ 12 in. ⫽ 30.480000 cm1 yard (yd) ⫽ 3 ft ⫽ 91.440000 cm1 statute mile (mi) ⫽ 5280 ft ⫽ 1.609344 km1 nautical mile ⫽ 6080 ft ⫽ 1.853184 km1 acre ⫽ 4840 yd2 ⫽ 4046.8564 m21 mi2 ⫽ 640 acres ⫽ 2.5899881 km21 fluid ounce ⫽ 1/128 U.S. gallon ⫽ 231/128 in.3 ⫽ 29.573730 cm31 U.S. gallon ⫽ 4 quarts (liq) ⫽ 8 pints (liq) ⫽ 128 fl oz ⫽ 3785.4118 cm31 British Imperial and Canadian gallon ⫽ 1.200949 U.S. gallons ⫽ 4546.087 cm31 slug ⫽ 14.59390 kg1 pound (lb) ⫽ 4.448444 nt1 newton (nt) ⫽ 105 dynes1 British thermal unit (Btu) ⫽ 1054.35 joules1 joule ⫽ 107 ergs1 calorie (cal) ⫽ 4.1840 joules1 kilowatt-hour (kWh) ⫽ 3414.4 Btu ⫽ 3.6 • 106 joules1 horsepower (hp) ⫽ 2542.48 Btu/h ⫽ 178.298 cal/sec ⫽ 0.74570 kW1 kilowatt (kW) ⫽ 1000 watts ⫽ 3414.43 Btu/h ⫽ 238.662 cal/s°F ⫽ °C • 1.8 ⫹ 321? … Purchase document to see full attachment