Answer:
The magnitude electrical force between the balloons is 14.4 N.
Step-by-step explanation:
Given that,
Charge on each balloons,

Distance between charged balloons, d = 0.06 m
We need to find the magnitude electrical force between the balloons. We know that two charged particle possess electrical force when placed at a certain distance. The force is given by :

k is the electrostatic constant

So, the magnitude electrical force between the balloons is 14.4 N. Hence, this is the required solution.