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Please formulate the answer of the following problem

Problem- The orbit of Halley's comment around the Sun is a long thin ellipse. At its aphelion (point farthest from the sun), the comment is 5.20x 10¹² m from the Sun and moves with a speed of 10.0 km/s.

Part 1- What is the comet's speed at its perihelion (closest approach to the sun) where the distance from the sun is 8.91 x 10¹⁰ m?

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