The student is missing the gravitational constant, G.
To calculate the gravitational force between two masses, the formula used is:
\[ F = \frac{G \cdot m_1 \cdot m_2}{r^2} \]
where:
- \( F \) is the gravitational force,
- \( G \) is the gravitational constant (\( 6.674 \times 10^{-11} , \text{N m}^2/\text{kg}^2 \)),
- \( m_1 \) and \( m_2 \) are the masses of the two objects (in this case, the Earth and the sun),
- \( r \) is the distance between the centers of the two masses.
Without the value of \( G \), she cannot calculate the gravitational force.
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