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If Mars is 225 million kilometers from the sun, how long does it take for light to reach mars?

 Nov 6, 2015
 #1
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2.25 X 10^8/299,792.458=750.5 seconds, or about 12.5 minutes.

 Nov 6, 2015
 #2
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u r som smart guy

 Nov 6, 2015

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