Question

define SI unit. Also write SI unit of mass,length and time
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Answer 1

Answer:

$\bold\blue{\boxed{The SI unit for length is meters(m), for mass is kilograms(kg), for volume is cubic meter(m^3), for density kilogram per cubic meter(kg/m^3), for time is seconds(s), and for temperature is kelvins(K).}}$

Answer 2

Answer:

The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.

Mass=kilograms (kg)

Length=metre (m)

Time=seconds (s)

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