Physics Assignment - Physics 122 Introductory Physics II...

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Unformatted text preview: Physics 122 Introductory Physics II TUTORIAL 1 Electric Field KEY Suggested practice problems from the textbook: Chapter 18, p.370, # 7, 11, 17, 23, 45. 1. Two identical conducting spheres are placed with their centers 0.30 m apart. One is given a charge of 12 x 10-9 C and the other a charge of -18 x 10-9 C. a) Find the electrostatic force exerted on one sphere by the other. b) The spheres are connected by a conductive wire. After equilibrium is occurred, find the electrostatic force between the two. 1 2 2. Three charges are located along a straight line, as shown below. What is the net electric force on charge q 2 ? The forces on q 2 are shown in the diagram below. Using Coulomb's law: F 12 = kq 1 q 2 /r 12 2 = (8.99 10 9 Nm 2 /C 2 )(7.5 10-6 C)(4.0 10-6 C)/(0.40 m) 2 = 1.7 N. F 32 = kq 3 q 2 /r 32 2 = (8.99 10 9 Nm 2 /C 2 )(9.0 10-6 C)(4.0 10-6 C)/(0.60 m) 2 = 0.90 N....
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This note was uploaded on 04/18/2008 for the course PHYSICS 123 taught by Professor Wrzesneski during the Winter '08 term at The University of British Columbia.

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Physics Assignment - Physics 122 Introductory Physics II...

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