Question

describing and interpreting observations
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:

Step1: Understand charge - transfer

When rubbed with wool, the balloons gain electrons and become negatively charged.

Step2: Apply charge - interaction rule

Like charges repel each other. Since both balloons are negatively charged, they will repel.

Answer:

Sonia observed the two balloons repelling each other. This is because when she rubbed them with wool, both balloons acquired the same (negative) electric charge, and like - charged objects repel each other.