06413_apdx - 881 Appendix 1 Appendix 1. SI units TABLE 1.1...

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Appendix 1. SI units TABLE 1.1 Base and dimensionless SI units Physical quantity Name Symbol length metre m mass kilogram kg time second s electric current ampere A thermodynamic temperature kelvin K luminous intensity candela cd amount of substance mole mol *plane angle radian rad *solid angle steradian sr *dimensionless units TABLE 1.2 Derived SI units with special names Physical quantity Name of Symbol of SI unit SI unit A AI frequency hertz Hz energy joule J force newton N power watt W pressure pascal Pa electric charge coulomb C electric potential difference volt V electric resistance ohm electric conductance siemens S electric capacitance farad F magnetic flux weber Wb inductance henry H magnetic flux density tesla T (magnetic induction) luminous flux lumen lm illuminance lux lx absorbed dose gray Gy activity becquerel Bq dose equivalent sievert Sv 881 Appendix 1
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TABLE 1.3 Decimal multiples and submultiples to be used with SI units Submultiple Prefix Symbol Multiple Prefix Symbol 10 –1 deci d 10 deca da 10 –2 centi c 10 2 hecto h 10 –3 milli m 10 3 kilo k 10 –6 micro µ 10 6 mega M 10 –9 nano n 10 9 giga G 10 –12 pico p 10 12 tera T 10 –15 femto f 10 15 peta P 10 –18 atto a 10 18 exa E 10 –21 zepto z 10 21 zetta Z 10 –24 yocto y 10 24 yotta Y TABLE 1.4 Conversion of units to SI units From To Multiply by AAJ in m 2.54 × 10 –2 ft m 0.3048 sq. in m 2 6.4516 × 10 –4 sq. ft m 2 9.2903 × 10 –2 cu. in m 3 1.63871 × 10 –5 cu. ft m 3 2.83168 × 10 –2 l(itre) m 3 10 –3 gal(lon) l(itre) 4.546 09 miles/hr m s –1 0.477 04 km/hr m s –1 0.277 78 lb kg 0.453 592 g cm –3 kg m –3 10 3 lb/in 3 kg m –3 2.767 99 × 10 4 dyne N 10 –5 poundal N 0.138 255 lbf N 4.448 22 mmHg Pa 133.322 atmosphere Pa 1.013 25 × 10 5 hp W 745.7 erg J 10 –7 eV J 1.602 10 × 10 –19 kW h J 3.6 × 10 6 cal J 4.1868 Appendix 1 882
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Appendix 2. Fundamental constants Constant Symbol Value in SI units AAAAAAAJJ acceleration of free fall g 9.806 65 m s –2 Avogadro constant L , N A 6.022 1367(36) × 10 23 mol –1 Boltzmann constant k = R/N A 1.380 658(12) × 10 –23 J K –1 electric constant ε 0 8.854 187 817 × 10 –12 F m –1 electronic charge e 1.602 177 33(49) × 10 –19 C electronic rest mass m e 9.109 3897(54) × 10 –31 kg Faraday constant F 9.648 5309(29) × 10 4 C mol –1
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06413_apdx - 881 Appendix 1 Appendix 1. SI units TABLE 1.1...

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