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Chapter 14: Electric Fields and Matter

Expert-verified
Matter & Interactions
Pages: 546 - 587
Matter & Interactions

Matter & Interactions

Book edition 4th edition
Author(s) Ruth W. Chabay, Bruce A. Sherwood
Pages 1135 pages
ISBN 9781118875865

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Illustration

64 Questions for Chapter 14: Electric Fields and Matter

  1. A positive charge is located between a neutral block of plastic and a neutral block of copper (Figure 14.68). Draw the approximate charge distribution for this situation.

    Found on Page 578

  2. Make a table showing the major differences in the electric properties of plastic, salt water, and copper. Include diagrams showing polarization by an external charge.

    Found on Page 578

  3. Make a table showing the major differences in the electric properties of plastic, salt water, and copper. Include diagrams showing polarization by an external charge.

    Found on Page 578

  4. Figure 14.69 shows a neutral, solid piece of metal placed near two points charges. Copy this diagram. (a) On your diagram, show the polarization of the piece of metal. (b) Then, at location A inside the solid piece of metal, carefully draw and label three vectors: (1) E→1, the electric field due to -q1; (2) E→2, the electric field due to +q2; (3) E→3, the electric field due to all of the charges on the metal. (c) Explain briefly why you drew the vectors the way you did.

    Found on Page 578

  5. Figure 14.69 shows a neutral, solid piece of metal placed near two points charges. Copy this diagram.

    Found on Page 578

  6. A small glass ball is rubbed all over with a small silk cloth and acquires a charge of +5nC. The silk cloth and the glass ball are placed 30 cm apart.

    Found on Page 579

  7. A student said, “When you touch a charged piece of metal, the metal is no longer charged: all the charge on the metal is neutralized.” As a practical matter, this is nearly correct, but it Isn’t exactly right. What’s wrong with saying that all the charge on the metal is neutralized?

    Found on Page 579

  8. You are wearing shoes with thick rubber soles. You briefly touch a negatively charged metal sphere. Afterward, the sphere seems to have little or no charge. Why? Explain in detail.

    Found on Page 579

  9. Criticize the following statement: “When you rub your finger along the slick side of a U tape, the excess charges flow onto your finger, and this discharges the tape.” Draw diagrams illustrating a more plausible explanation.

    Found on Page 579

  10. Criticize the following statement: “When you rub your finger along the slick side of a U tape, the excess charges flow onto your finger, and this discharges the tape.” Draw diagrams illustrating a more plausible explanation.

    Found on Page 579

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