Asked by violet
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.
All Answers 1
Answered by
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Answer: The glass and the paper have different charges.
Explanation: Attraction means there is an effective opposite charge near the surfaces. That can be because the glass is charged and the paper carries the opposite charge, or because the paper is neutral but becomes polarized (induced charge separation) by the charged glass — in either case the near sides have opposite sign and attract. Same charges would repel; if neither were charged there would be no electrostatic attraction.
Explanation: Attraction means there is an effective opposite charge near the surfaces. That can be because the glass is charged and the paper carries the opposite charge, or because the paper is neutral but becomes polarized (induced charge separation) by the charged glass — in either case the near sides have opposite sign and attract. Same charges would repel; if neither were charged there would be no electrostatic attraction.
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