Each ? particle in a beam of ? particles has a kinetic energy of 5.1 MeV. Through what potential difference would you have to accelerate these ? particles in order that they would have enough energy so that if one is fired head-on at a gold nucleus it could reach a point 1.4  10-14 m from the center of the nucleus?

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Rutherford's scattering experiment

Rutherford’s scattering experiment is also known as the gold foil experiment. This experiment disproved the plum pudding model of J.J. Thomson. In a gold foil experiment, high-energy alpha particles are made to strike a thin gold foil. The scattered alpha particles are detected using a detector. This experiment showed that the positive charge of the atom is at the center. Most of the atom’s mass is also confined to a small volume at the center. This region is known as the nucleus of the atom.