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OpenStudy (anonymous):
How to calculate a light year? (c)=?
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OpenStudy (vincent-lyon.fr):
Distance travelled by light in a vacuum during one year: it is just a matter of proportionality.
OpenStudy (vincent-lyon.fr):
c = 299 792 458 m/s
OpenStudy (vincent-lyon.fr):
A light-second is 299 792 458 metres A light-minute is.... A light-hour is.... A light-day is.... A light-year is....
OpenStudy (anonymous):
light travels 1 feet per nanosecond that is (0.000000001 seconds)
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