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preface to fifteenth edition

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GENERAL INFORMATION, CONVERSION TABLES, AND MATHEMATICS 2.53<br />

TABLE 2.7<br />

Conversion Fac<strong>to</strong>rs (Continued)<br />

To convert In<strong>to</strong> Multiply by<br />

Ton (force, short) new<strong>to</strong>n 8896.44<br />

Ton (force, long)/ft 2 bar 1.072 518<br />

pascal1.072 518 10 5<br />

Ton (force, metric)/m 2 bar 0.098 066 5<br />

pascal9806.65<br />

Ton (force, short)/ft 2 bar 0.957 605<br />

pascal9.576 05 10 4<br />

Tonne (metric) kilogram* 1000<br />

Torr atmosphere (1/760)<br />

millibar 1.333 224<br />

millimeter of mercury* (0C) 1<br />

pascal133.322; (101 325/760)<br />

Township (U.S.) square kilometer 93.2396<br />

square mile* 36<br />

Unified a<strong>to</strong>mic mass unit kilogram 1.660 54 10 27<br />

Unit pole weber 1.256 637 10 7<br />

Volt (mean international) volt 1.000 34<br />

Volt (U.S. international) volt 1.000 330<br />

Volt-second weber* 1<br />

Watt Btu per hour 3.412 14<br />

calorie per minute 14.3308<br />

erg per second* 10 7<br />

foot-pound per minute 44.2537<br />

horsepower (British) 0.001 341 02<br />

horsepower (metric) 0.001 359 62<br />

joule per second* 1<br />

kilogram-meter per second 0.101 972<br />

Watt per square inch watt per square meter 1550.003<br />

Watt-hour Btu 3.412 14<br />

calorie 859.845<br />

foot-pound 2655.22<br />

horsepower-hour (British) 0.001 341 02<br />

horsepower-hour (metric) 0.001 359 62<br />

joule* 3600<br />

liter-atmosphere 35.5292<br />

Watt-second joule* 1<br />

Weber maxwell* 10 8<br />

Week day* 7<br />

hour* 168<br />

Wey (British, capacity) bushel(British) 40 (variable)<br />

Wey (British, mass) pound 252 (variable)<br />

X unit meter 1.002 02 10 13<br />

Yard fathom* 0.5<br />

meter 0.9144<br />

Year (mean of 4-years) day 365.25<br />

week 52.178 87<br />

Year (sidereal) day (mean solar) 365.256 36

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