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Comets travel around the sun in elliptical orbits with large eccentricities. If a comet has speed 1.5×10^4 when at a distance of 2.5×10^11 from the center of thesun, what is its speed when at a distance of 6.0×10^10?
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speed v1 = 1. 5 * 104 m/s , R1 = 2. 5 * 1011 m , R2 = 6 * 1010 morbital speed v = (GM/R)0. 5so, v1/v2 = (R2/R1)0. 5solving we getv2 = 3. 06 * 104 m/s
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