Question

The basic unit of time is _____________.

Answer 1

Answer:

second

Explanation:

The base unit of time in the International System of Units (SI) and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom.

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Answer 2

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second

The base unit of time in the International System of Units (SI) and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom.