Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 11, Problem 54P
To determine
To Show:Escape speed at a point near a system having two stationary massive spherical massive objects is equal to the square root of the sum of the squares of the escape speeds from each of the two objects considered individually.
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A planet is discovered orbiting a distant star. The mass of theplanet is 40 times the mass of the Earth, and its radius is one-tenththe Earth’s radius. If a 2400-kg rocket has an escape velocity v onthe Earth, how does the escape speed of a 1200-kg rocket on theplanet compare with v?
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(c) Typically, black holes catch stass rather than people. Find the distance from the black hole at which a star of massmand rudiusrwill be disrupted by tidal forces, assuming that the two halves of the star are helil togegther hy gravity Ifse your mesult. to rherk whother a1M0s star will get disnupted before t plunges through the horizon of a108Mgblack hole. (If the disruption occurs inside the horizon, there will be no visible effect, since any enission produced during this event will not make it out of the black hole.)
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Physics for Scientists and Engineers
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