Given that the Sun moves in a circular orbit of radius 8 kpc around the center of the Milky Way, and its orbital speed is $220 \mathrm{km} / \mathrm{sec},$ work out how long it takes the Sun to complete one orbit of the Galaxy.
Added by Kristen S.
Step 1
Given that the radius of the Sun's orbit is 8 kpc, we convert this to meters by multiplying by 3.086 x 10^19 m in one kpc. Radius = 8 kpc * 3.086 x 10^19 m/kpc Radius = 2.4688 x 10^20 meters Show more…
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