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# solution_pdf3 - Version 082 Discussion 1 Erskine(58200 This...

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Version 082 – Discussion 1 – Erskine – (58200) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points Consider two planets with uniform mass dis- tributions. The mass density and the radius of planet 1 are ρ 1 and R 1 , respectively, and those of planet 2 are ρ 2 and R 2 What is the ratio M 1 M 2 of their masses? 1. M 1 M 2 = parenleftbigg ρ 2 ρ 1 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 2 2. M 1 M 2 = parenleftbigg ρ 2 ρ 1 parenrightbiggparenleftbigg R 2 R 1 parenrightbigg 2 3. M 1 M 2 = parenleftbigg ρ 1 ρ 2 parenrightbiggparenleftbigg R 2 R 1 parenrightbigg 2 4. M 1 M 2 = parenleftbigg ρ 1 ρ 2 parenrightbiggparenleftbigg R 2 R 1 parenrightbigg 3 5. M 1 M 2 = parenleftbigg ρ 2 ρ 1 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 3 6. M 1 M 2 = parenleftbigg ρ 1 ρ 2 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 7. M 1 M 2 = parenleftbigg ρ 1 ρ 2 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 2 8. M 1 M 2 = parenleftbigg ρ 2 ρ 1 parenrightbiggparenleftbigg R 2 R 1 parenrightbigg 3 9. M 1 M 2 = parenleftbigg ρ 2 ρ 1 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 10. M 1 M 2 = parenleftbigg ρ 1 ρ 2 parenrightbiggparenleftbigg R 1 R 2 parenrightbigg 3 correct Explanation: ρ = m V , so M 1 M 2 = ρ 1 parenleftbigg 4 3 π R 3 1 parenrightbigg ρ 2 parenleftbigg 4 3

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solution_pdf3 - Version 082 Discussion 1 Erskine(58200 This...

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