Multiple Choice
One light-hour is the distance that light travels in an hour.How far is this,in kilometers? (Recall that the speed of light is 300,000 km/s. )
A) 300,000 km
B) 18 million km
C) 100 million km
D) 1.08 billion km
E) 9.46 trillion km
Correct Answer:

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Correct Answer:
Verified
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