MASTERPHYS:KNIGHT'S PHYSICS ACCESS+WKB
4th Edition
ISBN: 9780135245033
Author: Knight
Publisher: PEARSON
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Chapter 22, Problem 3CQ
Four lightweight balls A, B, C, and D are suspended by threads.
Ball A has been touched by a plastic rod that was rubbed with
wool. When the balls are brought close together, without touch-
ing, the following observations are made:
• Balls B, C, and D are attracted to ball A.
• Balls B and D have no effect on each other.
• Ball B is attracted to ball C.
What are the charge states (glass, plastic, or neutral) of balls A,
B, C, and D? Explain
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In an experiment the following observations are made by a student for four charged objects W, X, Y, and Z:
• A glass rod rubbed with silk attracts W.
• W attracts Z but repels X.
• X attracts Z but repels Y.
• Y attracts W and Z.
Estimate whether the charges on each of the four objects are positive, negative, or neutral.
A thin, horizontal, 12-cm-diameter copper plate is
charged to -2.5 nC. Assume that the electrons are
uniformly distributed on the surface
Part A
What is the strength of the electric field 0.1 mm above the center of the top surface of the plate?
Express your answer to two significant figures and include the appropriate units.
► View Available Hint(s)
µA
E = -3.10-7
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C
m²
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Review | Constants
Using the figure, explain, in terms of Coulomb’s law, why a polar molecule is attracted by both positive and negative charges.
Chapter 22 Solutions
MASTERPHYS:KNIGHT'S PHYSICS ACCESS+WKB
Ch. 22 - l. Can an insulator be charged? If so, how would...Ch. 22 - Can a conductor be charged? If so, how would you...Ch. 22 - Four lightweight balls A, B, C, and D are...Ch. 22 - Charged plastic and glass rods hang by threads. a....Ch. 22 - A lightweight metal ball hangs by a thread. When a...Ch. 22 - Prob. 6CQCh. 22 - Prob. 7CQCh. 22 - The two oppositely charged metal spheres in FIGURE...Ch. 22 - Metal sphere A in FIGURE Q22.9 has 4 units of...Ch. 22 - Prob. 10CQ
Ch. 22 - Prob. 11CQCh. 22 - Prob. 12CQCh. 22 - Reproduce FIGURE Q22.13 on your paper. Then draw a...Ch. 22 - Prob. 14CQCh. 22 - The electric force on a charged particle in an...Ch. 22 - A glass rod is charged to +8.0 nC by rubbing. a....Ch. 22 - Prob. 2EAPCh. 22 - 3. A plastic rod that has been charged to —15 nC...Ch. 22 - A glass rod that has been charged to + 12 nC...Ch. 22 - Prob. 5EAPCh. 22 - Prob. 6EAPCh. 22 - Prob. 7EAPCh. 22 - A linear accelerator uses alternating electric...Ch. 22 - Prob. 9EAPCh. 22 - Two neutral metal spheres on wood stands are...Ch. 22 - Prob. 11EAPCh. 22 - You have two neutral metal spheres on wood stands....Ch. 22 -
13. Two 1.0 kg masses are 1.0 m apart (center...Ch. 22 - Two small plastic spheres each have a mass of 2.0...Ch. 22 - Prob. 15EAPCh. 22 - Two protons are 2.0 fm apart. What is the...Ch. 22 - What is the net electric force on charge A in...Ch. 22 - What is the net electric force on charge B in...Ch. 22 - What is the force F on the 1.0 nC charge in FIGURE...Ch. 22 - What is the force on the 1.0nC charge in figure...Ch. 22 - Object A, which has been charged to +4.0 nC, is at...Ch. 22 - A small plastic bead has been charged to —15 nC....Ch. 22 - A 2.0 g plastic bead charged to —4.0 nC and a 4.0...Ch. 22 - Two positive point charges q and 4q are at x = O...Ch. 22 - A massless spring is attached to a support at one...Ch. 22 - What are the strength and direction of the...Ch. 22 - The electric field at a point in space is E =...Ch. 22 - Prob. 28EAPCh. 22 - What magnitude charge creates a 1.0 N/C electric...Ch. 22 - Prob. 30EAPCh. 22 - Prob. 31EAPCh. 22 - A + 12 nC charge is located at the origin. a. What...Ch. 22 - A —12 nC charge is located at (x, y) = (1.0 cm, 0...Ch. 22 - A 0.10 g honeybee acquires a charge of +23 pC...Ch. 22 - Prob. 35EAPCh. 22 - 36. Two 1.0 g spheres are charged equally and...Ch. 22 - 37. The nucleus of a 125Xe atom (an isotope of...Ch. 22 - Prob. 38EAPCh. 22 - Prob. 39EAPCh. 22 - Objects A and B are both positively charged. Both...Ch. 22 - What is the force F on the —10 nC charge in FIGURE...Ch. 22 - What is the force F on the —10nC charge in FIGURE...Ch. 22 - 43. What is the force on the 5.0 nC charge in...Ch. 22 - Prob. 44EAPCh. 22 - What is the force F on the 1.0 nC charge at the...Ch. 22 - What is the force F on the 1.0 nC charge at the...Ch. 22 - Prob. 47EAPCh. 22 - The net force on the 1.0 nC charge in FIGURE...Ch. 22 - Prob. 49EAPCh. 22 - A positive point charge Q is located at x=a and a...Ch. 22 - Prob. 51EAPCh. 22 - FIGURE P22.52 shows three charges and the net...Ch. 22 - Prob. 53EAPCh. 22 - Prob. 54EAPCh. 22 - You have two small, 2.0 g balls that have been...Ch. 22 - A 2.0 g metal cube and a 4.0 g metal cube are 6.0...Ch. 22 - Prob. 57EAPCh. 22 - Prob. 58EAPCh. 22 - Prob. 59EAPCh. 22 - Prob. 60EAPCh. 22 - Prob. 61EAPCh. 22 - Two 5.0 g point charges on 1.0-m-long threads...Ch. 22 - Prob. 63EAPCh. 22 - Prob. 64EAPCh. 22 - 65. A 10.0 nC charge is located at position (1.0...Ch. 22 - Prob. 66EAPCh. 22 - An electric field E = 100,000i N/C causes the 5.0...Ch. 22 - An electric field E = 200,000i N/C causes the...Ch. 22 - Prob. 69EAPCh. 22 - In Problems 69 through 72 you are given the...Ch. 22 - Prob. 71EAPCh. 22 - Prob. 72EAPCh. 22 - Prob. 73EAPCh. 22 - Three 3.0 g balls are tied to 80-cm-long threads...Ch. 22 - 75. IN ne identical small spheres shown in FIGURE...Ch. 22 - 76. The force on the -1.0 nC charge is as shown in...Ch. 22 - 77. In Section 22.3 we claimed that a charged...
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