Two newly discovered planets follow circular orbits around


Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 43.6 km/s and 58.0 km/s. The slower planet's orbital period is 7.50 years.

(a) What is the mass of the star? Incorrect: Your answer is incorrect. kg

(b) What is the orbital period of the faster planet, in years? yr

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Physics: Two newly discovered planets follow circular orbits around
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