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Unformatted text preview: ) can be equal to (for 1.81×10 8 solar mass black holes) or less than (for >1.81×10 8 solar mass black holes) the density of water [5] . This is because the Schwarzschild radius is directly proportional to mass , while density is inversely proportional to the volume. Since the volume of a spherical object (such as the event horizon of a nonrotating black hole) is directly proportional to the cube of the radius, the density of a black hole is inversely proportional to the square of the mass, and thus higher mass black holes have lower average density. • The tidal forces in the vicinity of the event horizon are significantly weaker. Since the central singularity is so far away from the horizon, a hypothetical astronaut traveling towards the black hole center would not experience significant tidal force until very deep into the black hole....
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 Fall '10
 EmilyHoward
 Astronomy, The Milky Way, Black Holes, Black hole, supermassive black hole

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