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Chapter 22: Electric Charges and Forces

Expert-verified
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Pages: 602 - 628
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

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Illustration

96 Questions for Chapter 22: Electric Charges and Forces

  1. What are the strength and direction of the electric field 4.0 cm from a small plastic bead that has been charged to -8.0 nC?

    Found on Page 625

  2. Can an insulator be charged? If so, how would you charge an insulator? If not, why not?

    Found on Page 623

  3. A glass rod is charged to +8.0 nC by rubbing.

    Found on Page 624

  4. A negatively charged electroscope has separated leaves.

    Found on Page 623

  5. Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved so that the spheres no longer touch. Then the rod is withdrawn. Afterward, what is the charge state of each sphere? Use charge diagrams to explain your answer.

    Found on Page 624

  6. You have two neutral metal spheres on wood stands. Devise a procedure for charging the spheres so that they will have like charges of exactly equal magnitude. Use charge diagrams to explain your procedure.

    Found on Page 624

  7. Metal spheres A and B in FIGURE Q22.11 are initially neutral and are touching. A positively charged rod is brought near A, but not touching. Is A now positive, negative, or neutral? Use both charge diagrams and words to explain.

    Found on Page 623

  8. You have two neutral metal spheres on wood stands. Devise a procedure for charging the spheres so that they will have opposite charges of exactly equal magnitude. Use charge diagrams to explain your procedure.

    Found on Page 624

  9. If you bring your finger near a lightweight, negatively charged hanging ball, the ball swings over toward your finger as shown in FIGURE Q22.12. Use charge diagrams and words to explain this observation.

    Found on Page 623

  10. Two 1.0 kg masses are 1.0 m apart (center to center) on a frictionless table. Each has +10 mC of charge.

    Found on Page 624

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