Question

any 15 physical quantities definition
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Answer 1

Answer:

of what

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Answer 2

Answer:

A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.

Temperature is measured by the SI unit 'celsius'.

Length is measured by the SI unit 'metre'.

Mass is measured by the SI unit 'kilogram'.

Time is measured by the SI unit 'second'.

Frequency is measured by the SI unit 'hertz'.

Electric current is measured by the SI unit 'ampere'

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