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Unformatted text preview: M by 2 10 30 kg. Thus, admitting some tolerance into our estimate of h we find the critical black hole mass should in the range of 105 to 125 solar masses. (b) Interestingly, this turns out to be lower limit (which will surprise many students) since the above expression shows  da g  is inversely proportional to M . It should perhaps be emphasized that a distance of 50 R h from a small black hole is much smaller than a distance of 50 R h from a large black hole....
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 Spring '08
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 Physics, Acceleration

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