Question: A 6.50-MeV alpha particle is incident on a lead nucleus. Because of the Coulomb force between them, the alpha particle will approach the nucleus to

A 6.50-MeV alpha particle is incident on a lead nucleus. Because of the Coulomb force between them, the alpha particle will approach the nucleus to a minimum distance, rmin.
a) Determine rmin.
b) If the kinetic energy of the alpha particle is increased, will the particle's distance of approach increase, decrease, or remain the same? Explain.

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