The speed of light in vacuum is about:
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Answer: A. 3 × 10⁵ km/s
About 3 × 10⁸ m/s, which is 3 × 10⁵ km/s.
Easy
Tap an answer to check.
Answer: A. 3 × 10⁵ km/s
About 3 × 10⁸ m/s, which is 3 × 10⁵ km/s.