Question

what is unit ? write the supplementary unit in SI ?​

Answer 1

Answer:

A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a multiple of the unit of measurement. For example, a length is a physical quantity.

It is expressed as s^1

Answer 2

A unit of measurement is a specific magnitude of a quantity that has been established and recognised by law or convention and is used as a benchmark for measuring other quantities of the same kind.

• A unit of measurement is a specific magnitude of a quantity that has been established and recognised by law or convention and is used as a benchmark for measuring other quantities of the same kind. A multiple of the unit of measurement can be used to express any other quantity of that type.
• A length, for instance, is a physical quantity. A unit of length that represents a certain, predetermined length is the metre which has m as its symbol. For instance, "10 metres" (or 10 m) actually refers to 10 times the fixed, specified length known as "metre."
• From ancient times to the present, the definition, agreement, and practical application of units of measurement have been critical to human endeavour. It used to be quite usual to see a wide variety of unit systems. The International System of Units (SI), the updated version of the metric system, is now the accepted global standard.

• The supplementary units are plane angles and solid angles and they are expressed as radian and steradian respectively, in the SI system of units.

Hence, a unit of measurement is a specific magnitude of a quantity that has been established and recognised by law or convention and is used as a benchmark for measuring other quantities of the same kind.

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