# HW4 - Physics 122 Spring 2009 Document #11: Homework #04...

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Physics 122 Spring 2009 – Document #11: Homework #04 page 1 of 7 PHYS 122: Homework #04 February 8, 2009 Homework #04 is due in Box outside of Rock 207: 5:00 PM Sharp, Monday, February 16, 2009 Announcements: Mr. Covault’s Office Hours will generally be Mondays: 11 AM to noon and 1:30 PM to 4:00 PM, Thursdays: 1:15 PM to 2:30 PM and 3 PM to 4 PM, and Fridays: 10:45 AM to 12:15 PM. The Second Hour Exam (worth 10 percent of your grade) will be given Friday, March 6, 9:30 AM in lecture. This is the last day of classes before spring break. Please plan your travel accordingly. The First Hour Exam is being graded and I expect it will be available to students by Friday. No promises, though. Don’t forget: Odd labs this week. Homework Assignment continues next page. ...

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Physics 122 Spring 2009 – Document #11: Homework #04 page 2 of 7 This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday, February 16, 2009 Problem 1. A curved rod of linear charge density λ 0 has the shape of a circular arc of radius R . The rod subtends an angle θ as indicated below. Calculate the magnitude of the electric field at the position corresponding to point P at the center of the circular radius. λ 0 R θ P Note that the only way to work this problem is by direct integration of the Coulomb’s Law in differential form. Note also that symmetry and some trigonometry are helpful in this calculation.
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## This note was uploaded on 11/06/2009 for the course PHYS 122 taught by Professor Covault during the Spring '08 term at Case Western.

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HW4 - Physics 122 Spring 2009 Document #11: Homework #04...

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