Yup, there’s a theorem (“no-hair theorem”) that the only information about a black hole which does influence the universe is its mass, spin, and electric charge.
Well, a black hole 2cm in diameter is basically the mass of the Earth, and protons are positive. Gravity would attract the two, so the black hole would impact the earth. Criteria are fulfilled. It’s the biggest positive impact.
A black hole about 2cm across filled entirely with protons.
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The positive charge would remain though
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Yup, there’s a theorem (“no-hair theorem”) that the only information about a black hole which does influence the universe is its mass, spin, and electric charge.
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You may be right, but I have yet to have evidence to the contrary.
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Well, a black hole 2cm in diameter is basically the mass of the Earth, and protons are positive. Gravity would attract the two, so the black hole would impact the earth. Criteria are fulfilled. It’s the biggest positive impact.