Solved: Comets move around the sun in very elliptical
Chapter 13, Problem 13.89(choose chapter or problem)
Comets move around the sun in very elliptical orbits. At its closet approach, in 1986, Comet Halley was 8.79 * 107 km from the sun and moving with a speed of 54.6 km/s. What was the comets speed when it crossed Neptunes orbit in 2006?
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