Problem a proton is fired from far away toward the nucleus, Ask an Expert

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Problem: A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm.

Part A: If the proton is fired at a speed of 4.6×10⁷ m/s, what is its closest approach to the surface of the nucleus? Assume the nucleus remains at rest.

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