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?

Sonia observers the two balloons and rubs a section of wool on them so the charges repel each other.

She will observe that the ballons repulsion to each other due to the same charges found on the ballons due to the rubbing the wool.

Explanation:

When Sonia rubs the woolen cloth the part or the section of the balloon becomes positively charged and due to the same charge present in both balloons repel one other as similar charges cause repulsion. Both balloons acquired the same charge and similar charges repel each other. So, the two balloons repelled each other.

Thus, the correct answer is - She will observe that the ballons repulsion to each other due to the same charges found on the ballons due to the rubbing the wool.

She observed they would repel each other. If both of the inflated balloons are rubbed with woolen cloth, they will repel each other because both balloons have a similar charge. Rubbing the cloth on the balloons introduces a negative charge in them. And since both balloons have a negative charge due to being rubbed, they will repel each other. This is due to static electricity.

Sample response from edge 2021: Sonia observed that the two balloons repelled each other. This is because both balloons acquired the same charge when she rubbed them with the piece of wool, and like charges repel each other.

What did you include in your response? Check all that apply.

The two balloons repelled each other.  

Both balloons acquired the same charge.

Like charges repel each other.

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the correct answer on edgen is:

(c.) prevent the spread of communism.

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