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Home Q & A Board Science-Related Homework Help Physics
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microlipse microlipse
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11 years ago
What is its linear diameter?  in lightyears What is this in kilometers? If the Ring nebula is expanding at a velocity of 15 km/s, typical of planetary nebulae, how old is it? yrs (Hint: 1 year is 3.15e7 s)
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ilovebioilovebio
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11 years ago
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11 years ago
Linear Diameter(kilometers) = 150,000,000 x distance(in parsecs) x angular diameter(arc seconds)
5,000 ly= 1,532.97 parsecs
linear diameter = 150,000,000 x 1,532.97 x 72
Linear diameter = 1.6556076 × 10^13 km OR 1.75 light years
------------------------------------------------
15 km/s = .00005 c
1.75/.00005 = 35,000 years Leftwards Arrow-- age of nebula
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