The Sun moves in a circular orbit around our Milky Way galaxy with an orbital radius r
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Question:
The Sun moves in a circular orbit around our Milky Way galaxy with an orbital radius r = 2.5x1020 m m and a uniform circular speed v = 2x105 m/s. Estimate the mass of the galaxy inside the Sun orbital radius.
Use G = 6x10-11 N m/kg.
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