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Black holes can be characterized by their event horizons.
a) If the sun were compressed sufficiently enough so that it wouldturn into a black hole, what would be the event horizon of such an objectexpressed in km?
b) What is the event horizon for a black hole with a mass of 109Msol?
c) What is the event horizon for the black hole with a mass of4•106 Msol in the center of our Galaxy?
How to find out potential energy
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