Two Moons Orbit a Planet in Nearly Circular Orbits

question 26

Multiple Choice

Two moons orbit a planet in nearly circular orbits.Moon A has orbital radius r,and moon B has orbital radius 4r.Moon A takes 20 days to complete one orbit.How long does it take moon B to complete an orbit?

• A) 20 d
• B) 40 d
• C) 80 d
• D) 160 d
• E) 320 d

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Definitions:

Retention Ratio

This ratio indicates the percentage of a company's earnings not distributed as dividends but reinvested in the business.

Return On Equity

A financial ratio that measures the profitability of a corporation in relation to stockholders' equity.

Fixed Asset Capacity

The maximum output or production level that can be achieved using the existing fixed assets under normal circumstances.

Growth Rate

The measure of an entity's increase in size, value, or quantity over a specific period, often expressed as a percentage.