Length. Meter
Mass. Kilogram
Time. Second
specific gravity
Write about 10 instruments which are used to measure different physical quantities i.e. - mass, volume, time and temperature
Physical Quantities are of TWO types: 1) Fundamental Quantities. 2) Derived Quantities.
If you look at the definitions of the SI units, and especially the derived units, you'll see that all the derived units are derived from other units. It might actually be possible to have even less base units, but that would make the system of units unnecessarily confusing.
Subsidiary quantities and units are bigger or smaller than main units of measurement. For example, centimeters and kilometers are both based on meters.
specific gravity
specific gravity
Write about 10 instruments which are used to measure different physical quantities i.e. - mass, volume, time and temperature
to know what is the measure
-- The physical quantities involved in speed are distance and time. -- Some popular units of distance include the mile, foot, kilometer, smoot, and parsec. -- Some popular units of time include the second, month, week, fortnight, and year.
what is the smallest prime number
The units are: -- Kilogram -- Meter -- Second. All of the other units in the metric system are fractions, multiples, or combinations of these three.
Physical Quantities are of TWO types: 1) Fundamental Quantities. 2) Derived Quantities.
Because.... There are two types of physical quantities. Fundamental and derived. Fundamental units cannot be derived from any of the two types of units while derived units can be derived from these two types of units. It's important to be clearly defined as there are so many indices of the base number. And no one can derive the units if they aren't properly defined
The fundamental units are those of the SI system - The unit of Temperature, Kelvin; of Time, the second; of Mass, Kilogram; of brightness, the Candela; of physical quantity, the Mole; and of electrical current, the Ampere. With these units, all fundamental quantities may be described.Comment SI doesn't use the term, 'fundamental'. Those units listed above are termed 'base' units.
If you look at the definitions of the SI units, and especially the derived units, you'll see that all the derived units are derived from other units. It might actually be possible to have even less base units, but that would make the system of units unnecessarily confusing.
ratio that compares 2 quantities measured in diiferent units