Charge separation and photocopying: Putting it all together
An alpha particle consists of two protons and two neutrons together in one nucleus with a mass of 6.64 X 10-27 kg and charge +2e. The alpha particle flies at 3.0 X 107 m/s from a large distance toward the nucleus of a stationary gold atom (charge +79e). (a) Make a list of physical quantities that you can determine using this information and explain how you will calculate one of them. (b) Determine the distance of the alpha particle from the gold nucleus when it stops.
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