The Simplified Version of Kepler's Third Law of Planetary Motion

question 53

Multiple Choice

The simplified version of Kepler's third law of planetary motion relates the period P (in sidereal years) to the length of the semimajor axis a (in astronomical units) in which way?

• A) P² = a³
• B) P = a²
• C) P = 1/a²
• D) P³ = a²

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