emilynobile32 emilynobile32

02-04-2018
Mathematics

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Light moves very fast — approximately 3×10^8 meters every second. At that rate, how many meters does light travel in one year, which is about 3×10^7 seconds long? This so-called light year is used in astronomy as a yardstick for measuring even greater distances.

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sqdancefan sqdancefan

03-04-2018

(3×10^7)×(3×10^8) = 9×10^15 . . . . . meters in a light-year (approximate)

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