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QUESTION
A light-year (ly) is the distance light travels in one year (at speed of 2.998 10 8 m/s ). An astronomical unit (AU) is the average distance from the...
A light-year (ly) is the distance light travels in one year (at speed of 2.998 × 108 m/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×108 km. 1 year = 3.156 × 107 s.How many meters are there in 4.90 ly ?
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