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Home Q & A Board Science-Related Homework Help Physics
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jimmymac jimmymac
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10 years ago
THe speed of light is 300000km/s. How far is light-year?
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#1
Staff Member
Educator
10 years ago
Find out how many seconds are in one year then multiple that number by 300000km/s.

Done Smiling Face with Open Mouth
Mastering in Nutritional Biology
Tralalalala Slight Smile
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#2
10 years ago
1 light-year = SI units
9.461×1012 km 9.461×1015 m
Astronomical units
63.24×103 AU 0.3066 pc
US customary / Imperial units
5.879×1012 mi 31.04×1015 ft
A light-year or light year (symbol: ly) is a unit of measurement of length, specifically the distance that light travels in a vacuum in one year. While there is no authoritative decision on which year is used, the International Astronomical Union (IAU) recommends the Julian year.
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