Find the ratio of the electric and gravitational forces between two protons.

Explanation

To find the ratio of the electric force to the gravitational force between two protons, we can follow these steps:

### Step 1: Write the expression for the electric force
The electric force \( F_e \) between two protons can be calculated using Coulomb's law:
\[ F_e = k \frac{q_1 q_2}{r^2} \]
Since both charges are the same (the charge of a proton), we can write:
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