The nucleus in an iron atom has a radius of about `4.0xx10^(-15)`m and contains 26 protons.
What is the magnitude of the gravitational force between those same two protons?

Explanation

To find the magnitude of the gravitational force between two protons in an iron nucleus, we can use Newton's law of gravitation, which states that the gravitational force \( F \) between two masses \( m_1 \) and \( m_2 \) separated by a distance \( r \) is given by the formula:

\[ F = \frac{G m_1 m_2}{r^2} \]

Where:
- \( G \) is the gravitational constant, approximately \( 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \)
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