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October 23, 2014

Homework Help: Physics

Posted by Lonely on Saturday, July 30, 2011 at 12:15pm.

Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is 6.152 x 10^12 m. calculate its speed at aphelion. answer should be in m/s

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