Question

what is the speed of light in vaccum?

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Answer 1

Answer:

300,000 km/s

Explanation:

Light travels at approximately 300,000 kilometers per second in a vacuum

Answer 2

Answer:

The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 metres per second. 

Explanation:

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