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For a Planet in Orbit Around a Star the Perihelion

Question 11

Multiple Choice

For a planet in orbit around a star the perihelion distance is rp and its speed at perihelion is vp. The aphelion distance is ra and its speed at aphelion is va. Which of following is true?


A) va = vp
B) va/ ra = vp/rp
C) va ra = vp rp
D) va/ r2a = vp/r2p
E) va r2a = vp/r2p

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