Miniature black holes. (13-5 mod.) 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 1.00 x 10¹¹ [kg] (and a radius of only 1.00 x 10-16 [m]) reached Earth, at what distance from Earth's surface (g = 9.81 [m/s²]) will its gravitational pull be enough to make objects resting on Earth's surface weightless? (G= 6.67 x 10-11 [m³-kg-¹-s-2])
