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The units of these base quantities are: Mass , Length, Time , Current , Temperature, Amount of substance, Light(luminous) intensity
Mass: kg
Length: metre
Time: second
Current: Ampere
Temperature: Kelvin
Amount of substance: mole
Light intensity: Candela
Derive base units of the following derived quantities:
Pressure, Charge , Force, Power,
Pa=kgm-1s-2
Charge unit coulomb,Q=kgm-4s-1
Power=kgm2s-3
Charge(Q)=pressure/speed×area
Indicate submultiples :
Pico, nano,micro, milli ,centi, deci, kilo, mega, giga, Tera and their symbols
Distinguish between scalar and vector quantities.
Pico: 10^-12 p
Nano:10^-9 n
Micro: 10^-6 u
Milli : 10^-3 m
Centi : 10^-2 c
Deci :10^-1 d
Kilo :10^3 k
Mega:10^6 M
Giga:10^9 G
Tera :10^12 T
Scalar quantities are the quantities that can be described completely with the help of the numerical magnitude only.
Vector quantities are described with the help of direction and magnitude.
Scalars: length , mass , time ,current, temperature, amount of substance ,power
Vectors : velocity, acceleration,resistance
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