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14) A proton is 20 m away from a Uranium nucleus (atomic number 92), and is moving towards the Uranium at a speed of 2.1 x 10^6 m/s a) What is the distance of closest approach to the Uranium nucleus? b) The Uranium nucleus has a diameter of 1.7 fm. What is the electric potential at the Uranium nucleus at the surface of the nucleus? c) Gru, when he was a supervillain, attempted to merge two identical Uranium nuclei to create a superbomb. If two identical nuclei as described above (atomic number 92, diameter 1.7 fm) are successfully merged together by Gru, what is the electric potential at the surface of this new element