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25-01-2022
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The speed of light in a vacuum is 2. 998×108 m/s. What is its speed in kilometers per hour (km/h)?.

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25-01-2022

Explanation:

You know that 3,600secs makes an hr and 1000m makes a km.

You simply multiply by 3,600sec and divide by 1000m

=

2.998x10⁸m/s x 3,600s/1hr x 1km/1000m

= 1.079 x 10⁹km/hr.

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