Question: (a) What initial kinetic energy must an alpha particle have if it is to approach a stationary gold nucleus to within a distance of 25.5

(a) What initial kinetic energy must an alpha particle have if it is to approach a stationary gold nucleus to within a distance of 25.5 fm?

(b) If the initial speed of the alpha particle is reduced by a factor of 2, by what factor is the distance of closest approach changed? Explain.

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