Question

classify into fundamental and derived units from the following.
( Joule, watt, hertz, second, pascal, kelvin, mole, newton, volt)

Answer 1

Fundamental: second, kelvin, mole. Fundamental units are base units in SI. All other units can be built with the fundamental ones.

Not fundamental: these units can be derived from the fundamental units.

$\text{joule}=\text{kg}^1\text{m}^2\text{s}^{-2}, \\ \text{watt}=\text{kg}^1\text{m}^2\text{s}^{-3},\\ \text{hertz}=\text{s}^{-1}, \\ \text{pascal}=\text{kg}^1\text{m}^{-1}\text{s}^{-2}, \\ \text{newton}=\text{kg}^1\text{m}^{1}\text{s}^{-2}, \\ \text{volt}=\text{kg}^1\text{m}^{2}\text{A}^{-1}\text{s}^{-3}.$