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24 March, 09:10

The speed of light in a vacuum is 2.99x10^8 m/s. calculate its speed in miles per hour.

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  1. 24 March, 09:24
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    You'll never get the correct answer without the correct conversion factor. Note carefully that you have no decimal. It should be

    1 km = 0.6214 miles

    1000 m = 1 km

    60 seconds = 1 minute

    60 minutes = 1 hour.

    2.998E8 m/s x (1 km/1000m) x (0.6214 miles/km) x (60 sec/min) x (60 min/hr) = ?
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