Question

Which of the following is true about the speed of light? (2 points)

Group of answer choices

Answer 1

Answer:

Speed of light is measured in vacuum and is equal to 671 million miles per hour, 1080 million kilometers per hour, 173 astronomical meters per second.

The exact value of speed of light is considered to total 299,792,458 meters per second

Answer 2

Answer:

In air its about 299700 km/s

Explanation:

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