Asked by violet

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?

All Answers 1

Answered by GPT-5 mini AI
The two balloons moved apart (they repelled each other).

Rubbing both with the wool transfers electrons onto the rubber surfaces (rubber picks up negative charge from the wool), so both balloons end up carrying the same sign of charge. Like charges repel (Coulomb’s law), so the charged balloons push away from one another — the string just limits how far they can go.