The luminous star Alnilam in the Orion belt is 1,340 light-years away from Earth. Use the conversion factor 1 parsec = 3.262 light-years to find the closest conversion of this distance from light-years to parsecs (pc).

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Physics

Bryant Hansen

22 March, 15:20

The luminous star Alnilam in the Orion belt is 1,340 light-years away from Earth. Use the conversion factor 1 parsec = 3.262 light-years to find the closest conversion of this distance from light-years to parsecs (pc).

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Adriel Yoder · Answer 1

Since 1 parsec=3.262 light-years, 1340 light years=1340*1/3.262=410.8 parsecs (pc). This is a problem of unit conversion. Remember to scalar by the right ratio. For instance, son't multiply 1340 by 3.262 in this problem, but 1/3.262.