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For a Planet in Orbit Around a Star the Perihelion

Question 34

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/ra 2 = vp/rp 2
E) va ra 2 = vp rp 2

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