Question

define fundamental quantities and fundamenta units​

Answer 1

The Fundamental Quantity is independent Physical Quantity that is not possible to express in other Physical Quanitity. It is used as pillars for other quantities aka Derived Quantities. In Physics, Length, Mass, Time, Electric Current, Thermodynamic Temperature, etc are examples of Fundamental Quantities.

Area =m²

Volume =m³

Force =kgm/s

Pressure =kg/(ms² )

Density =kg/m³"

The seven fundamental S.I units are:−

metre → for length

second → for time

kilogram → for mass

kelvin → for temperature

ampere → for electric current

candela → for luminous intensity

mole → for the amount of substance.

Answer 2

Step-by-step explanation:

Nanotechnology is a field of research and innovation concerned with building 'things' - generally, materials and devices - on the scale of atoms and molecules. A nanometre is one-billionth of a metre: ten times the diameter of a hydrogen atom. The diameter of a human hair is, on average, 80,000 nanometres.