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Astronomers discover an exoplanet, a planet orbiting a star other than the Sun, that has an orbital period of 3.50 Earth years in a

Astronomers discover an exoplanet, a planet orbiting a star other than the Sun, that has an orbital period of 3.50 Earth years in a circular orbit around its star, which has a measured mass of 3.90 1030 kg. Determine the radius r of the exoplanet's orbit. r = m

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