3. A Rutherford scattering experiment is performed on a gold foil target with alpha beams of two different kinetic energies, one of 3.00 MeV, the second of 6.00 MeV. Qualitatively compare the distance of closest approach (rmin) for the two different energy alpha beams. Give a numerical answer as a ratio of the closest approach for the more energetic alphas to the less energetic ones.