As Halley’s comet orbits the sun, its distance from the sun changes dramatically. If the comet’s speed at a distance of 9.5 ×10^10 m from the sun is 5.2 × 10^4 m/s and angular momentum is conserved, what is its speed when it is 3.8 × 10^12 m from the sun? Assume the comet can be treated as a point mass. Ignore radial components of momentum. *

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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As Halley’s comet orbits the sun, its distance from the sun changes dramatically. If the comet’s speed at a distance of 9.5 ×10^10 m from the sun is 5.2 × 10^4 m/s and angular momentum is conserved, what is its speed when it is 3.8 × 10^12 m from the sun? Assume the comet can be treated as a point mass. Ignore radial components of momentum. *
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