Question

You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8 × 10⁷ m and its rotation period to be 22.3 hours. You have previously determined that the planet orbits 7.5 × 10¹¹ m from its star with a period of 402 earth days. Once on the surface you find that the acceleration due to gravity is 94.8 m/s². What are the mass of (a) the planet and (b) the star? (G = 6.67 × 10^-11 N · m²/kg²)

(a) 2.1 × 1026 kg, (b) 1.2 × 1032 kg(a) 1.1 × 1026 kg, (b) 2.1 × 1032 kg(a) 2.1 × 1026 kg, (b) 2.1 × 1032 kg(a) 1.1 × 1026 kg, (b) 1.2 × 1032 kg

Answer 1