Question

characterizing electric charges
the glass is attracting the pieces of paper. what does this tell you about the charges on the glass and the paper?
the glass and the paper have the same charge.
the glass and the paper have different charges.
neither the glass nor the paper has a charge.

Explanation:

Opposite charges attract each other. If the glass is attracting the paper, it means they have different charges. If they had the same charge, they would repel. If neither had a charge, there would be no electrostatic attraction.

Answer:

The glass and the paper have different charges.