Question

sonia was experimenting with electric charges. she tied two inflated balloons together, held them next to each other, and rubbed both with a piece of wool. what did sonia observe, and why?

Explanation:

When two balloons are rubbed with wool, they gain the same type of electric charge (negative charge, as electrons are transferred from the wool to the balloons). According to the law of electric charges, like charges repel each other.

Answer:

Sonia observed that the two balloons repelled each other. This is because when rubbed with wool, both balloons acquired the same type of electric charge (negative charge), and like charges repel.