CH16-HW01-FALL2010 - 1 CH16-HW01-FALL2010 Rachel Pereira PHYS 272-Fall 2011 Fall 2011 Instructor Virendra Saxena WebAssign

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12/14/11 CH16-HW01-FALL2010 1/3 www.webassign.net/web/Student/Assignment-Responses/view_key?dep=3173267 Current Score : 18.5 / 22.5 Due : Sunday, September 25 2011 11:58 PM EDT 1. 6.5/8.5 points | Previous Answers MI3 16.2.X.019 A plastic rod 1.7 m long is rubbed all over with wool, and acquires a charge of -8e-08 coulombs. We choose the center of the rod to be the origin of our coordinate system, with the x -axis extending to the right, the y -axis extending up, and the z -axis out of the page. In order to calculate the electric field at location A = < 0.7, 0, 0 > m, we divide the rod into 8 pieces, and approximate each piece as a point charge located at the center of the piece. (a) What is the length of one of these pieces? .2125 0.212 m (b) What is the location of the center of piece number 4 ? < 0 0 , -.2125 0.106 , 0 0 > m. (c) How much charge is on piece number 4 ? (Remember that the charge is negative.) -1E-8 -1.00e-08 coulombs (d) Approximating piece 4 as a point charge, what is the electric field at location
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This note was uploaded on 12/14/2011 for the course PHYS 272 taught by Professor K during the Fall '07 term at Purdue University-West Lafayette.

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CH16-HW01-FALL2010 - 1 CH16-HW01-FALL2010 Rachel Pereira PHYS 272-Fall 2011 Fall 2011 Instructor Virendra Saxena WebAssign

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