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Question 1.TE.14: What is the SI unit of mass ? How is it defined?...

What is the SI unit of mass ? How is it defined?

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The SI unit of mass is kilogram (kg). Kilogram is defined as the mass of platinum-iridium (Pt-Ir) block, stored at the International Bureau of Weights and Measures in France. Thus it is the mass of the international prototype of the kilogram.

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