Question

Define R.D What is its SI units​

Answer 1

Answer:

The International System of Units (abbreviated SI from systeme internationale , the French version of the name) is a scientific method of expressing the magnitudes or quantities of important natural phenomena. ... All SI units can be expressed in terms of standard multiple or fractional quantities, as well as directly.

Explanation:

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Answer 2

Answer:

Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material.SI unit is: kg/m3.