Physics, 25.09.2019 07:30 emilysjuliet110
Ablack hole is an object so heavy that neither matter nor even light can escape the influence of its gravitational field. since no light can escape from it, it appears black. suppose a mass approximately the size of the earth's mass 6.42 × 1024 kg is packed into a small uniform sphere of radius r. use: the speed of light c = 2.99792 × 108 m/s. the universal gravitational constant g = 6.67259 × 10−11 n m2 /kg2 . hint: the escape speed must be the speed of light. based on newtonian mechanics, determine the limiting radius r0 when this mass (approximately the size of the earth's mass) becomes a black hole. answer in units of m
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The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.
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Ablack hole is an object so heavy that neither matter nor even light can escape the influence of its...
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