Question

definition of second ​

Answer 1

Answer:

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Explanation:

Second:

It is the base unit of time in the International System of Units.

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Answer 2

The second is the base unit of time in the International System of Units, commonly understood and historically defined as ¹⁄₈₆₄₀₀ of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

Explanation:

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