#### Bestfrog

**1. Homework Statement**

The component of nucleus' energy due to the strong interaction (with ##Z,A >>1##) can be written as ##U_f = E_f A^r Z^p##, (##E_f## is a constant with the dimension of a energy). Find ##r,p## knowing that

(i) strong interaction doesn't distinguish between protons and neutrons

(ii) strong interaction is a force of contact

Can you give me a hint to start?