Problem: In effecting nuclear changes by bombarding target nuclei with positively charged alpha particles, it is necessary to accelerate these particles to high speed because it is necessary to(A) drive the positive particles through the electron cloud.(B) overcome the force of repulsion of the nucleus.(C) focus the bombarding particle more accurately.(D) strip electrons from the atom.

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In effecting nuclear changes by bombarding target nuclei with positively charged alpha particles, it is necessary to accelerate these particles to high speed because it is necessary to

(A) drive the positive particles through the electron cloud.

(B) overcome the force of repulsion of the nucleus.

(C) focus the bombarding particle more accurately.

(D) strip electrons from the atom.

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Based on our data, we think this problem is relevant for Professor Nobile's class at Marquette University.