(a) Show that the energy associated with the strong force between nucleons in a nucleus is proportional to A, the mass number of the nucleus in question.

(b) Show that the energy associated with the Coulomb force between protons in a nucleus is proportional to Z (Z - 1).

(c) Show that, as we move to larger and larger nuclei (see Figure), the importance of the Coulomb force increases more rapidly than does that of the strong force.

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