You Are the Science Officer on a Visit to a Distant

question 64

Multiple Choice

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. You have previously determined that the planet orbits 2.9 × 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 19.5 m/s². What are the masses of (a) the planet and (b) the star?
(G = 6.67 × 10^-11 N ∙ m²/kg²)

• A)
• (a) 2.4 kg × \(10^{25}\) kg,
• (b) 1.2 kg ×\(10 ^ { 31 }\) kg
• B)
• (a) 4.3 kg × \(10^{25}\) kg,
• (b) 1.2 kg ×\(10 ^ { 31 }\) kg
• C) (a) 2.4 kg × \(10^{25}\) kg,
• (b) 7.1 kg ×\(10^{30}\) kg
• D)
• (a) 4.3 kg × \(10^{25}\) kg,
• (b) 7.1 kg ×\(10^{30}\) kg

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