The astronomical unit (AU) is defined as the mean
Chapter , Problem 69(choose chapter or problem)
The astronomical unit (AU) is defined as the mean centerto- center distance from Earth to the Sun, namely The parsec is the radius of a circle for which a central angle of 1 s intercepts an arc of length 1 AU. The light-year is the distance that light travels in 1 y. (a) How many parsecs are there in one astronomical unit? (b) How many meters are in a parsec? (c) How many meters in a light-year? (d) How many astronomical units in a lightyear? (e) How many light-years in a parsec?
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