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

Explanation

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

### Step 1: Write the formula for gravitational force (Fg)
The gravitational force between two masses is given by the formula:
\[ F_g = \frac{G m_1 m_2}{r^2} \]
Where:
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