Assignment Booklet 12 Atomic Physics Value egle Unit D Assessment Use the following information to answer this analytic question. A plutonium-239 nucleus, initially at rest, undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a mass of 3.90 x 10-25 kg, and moves away from the location of the decay with a speed of 2.62 x 105 m/s. Determine the minimum electric potential difference that is required to bring the alpha particle to rest. Marks will be awarded based on the two physics principles (listed below) you choose, the formulas you state, the substitutions you show, and your final answer. alpha particle Uniform motion (balanced forces) charge : the = 3.2x10-19 C Uniformly accelerated motion (unbalanced forces) mass : 6.65 x 10 - 27 kg Circular motion (unbalanced forces) Work-energy theorem Conservation of momentum Conservation of energy Conservation of mass-energy Conservation of charge Conservation of nucleons Wave-particle duality