Asked by William
                Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a mass of 3.5  1011 kg (and a radius of only 1.0  10-14 m) reached Earth, at what distance from your head would its gravitational pull on you match that of Earth's?
...I'm not sure how to go about solving this...
            
        ...I'm not sure how to go about solving this...
Answers
                    Answered by
            bobpursley
            
    9.8=G3.5E11/r^2  solve for r
 
    
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