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Saturday, December 25, 2010

English and metric systems of units

English and metric systems of units


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English                                           Metric                                                SI
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                                       MKS                         CGS
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Length:
Yard (yd)                   Meter (m)             Centimeter (cm)              Meter (m)
(0.914 m)                  (39.37 in.)            (2.54 cm = 1 in.)
(3 feet (ft))                (100 cm)
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Mass:
Slug                           Kilogram (kg)           Gram (g)                  Kilogram (kg)
(14.6 kg)                    (1000 g)
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Force:
Pound (lb)                 Newton (N)              Dyne (dyn)                  Newton (N)
(4.45 N)                     (100,000 dynes)
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Temperature:
Fahrenheit (°F)        Celcius or               Centigrade (°C)            Kelvin (K)
(=9/5 °C+32)          Centigrade (°C)                                             K=273.15+°C
                                  (=5/9(°F-32))
Boiling
212 °F                           100 °C                        100 °C                      373.15 K
Freezing
32 °F                                  0 °C                            0 °C                      273.15 K
Absolute zero
-459.7 °F                 -273.15 °C                -273.15 °C                                0 K
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Energy:
Foot-pound (ft-lb)  Newton-meter (N.m)    Dyne-centimeter            Joule (J)
(1.356 joules)           or joule (J)                      or erg
                                   (0.7376 ft-lb)             (1 joule = 107 ergs)
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Time:
Second (s)                Second (s)                       Second (s)                 Second (s)
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