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CH-0-Units - Dr Sabah AL-Naimi Qatar University Physics...

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Dr. Sabah AL-Naimi Qatar University Physics Program FALL 2009 PHYS191 1 Physical Quantities, Units, and Conversion of Units Acceleration = Force = Newton : N dyne Pressure = Temperature Celsius System Kelvin System Fahrenheit System K K 2 time Distance 2 m/s 2 cm/s 2 s m Kg 1N 2 s cm g 1dyne on accelerati mass Area Force pascal m N 2 Pa m N 1 / 1 2 2 cm dyne C o F o C o F o The difference between SI units and cgs units: Cm/s m/s Speed, velocity=distance/time Volume Area Second : s Second : s Time Gram : g Kilogram : Kg Mass Centimeter : cm Meter : m Length, distance, or displacement cgs Units SI Units Physical Quantities 2 m 2 cm 3 cm 3 m
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