Two negatively charged objects exert a force on each other. Describe the force between the objects, and describe two ways to increase the force between them.

When two negatively charged objects are placed near each other, they exert a repulsive force on one another. This is due to the principle of like charges repelling each other, as described by Coulomb's Law. The force (F) between the two charged objects is inversely proportional to the square of the distance (r) between them and directly proportional to the product of the magnitudes of their charges (q1 and q2). This can be mathematically expressed as:

\[ F = k \frac{|q_1 q_2|}{r^2} \]

where \( k \) is Coulomb's constant.

To increase the force between the two negatively charged objects, you can consider the following methods:

1. Increase the Magnitude of the Charges: By increasing the amount of negative charge on either or both of the objects, the repulsive force between them will increase. This can be accomplished by adding more electrons to the objects or through other means of charge accumulation.

2. Decrease the Distance Between the Objects: Bringing the two charged objects closer together will also increase the force between them. As the distance \( r \) decreases, the force \( F \) increases, since the force is inversely proportional to the square of the distance.

Using either of these methods will lead to a stronger repulsive force between the negatively charged objects.