HomeworkAssignment 3 01-22-10

# HomeworkAssignment 3 01-22-10 - and the resulting electric...

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1 Lehigh University January 22, 2010 Physics 21, Spring 2010 Home Work Assignment 3 Note: Solutions to the problems must be submitted on WileyPLUS (www.wileyplus.com). HW-3 due January 26, 2010 (11 PM online) 3-1 ( HRW 22-7) Two particles are fixed to an x axis: particle 1 of charge C at cm and particle 2 of charge at cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero? SSM . 3-2 (HRW 22-12) Figure 22-35a shows two charged particles fixed in place on an x axis with separation L. The ratio of their charge magnitudes is 4.00. Figure 22-35b shows the x component of their net electric field along the x axis just to the right of particle 2. The x axis scale is set by . (a) At what value of is maximum? (b) If particle 2 has charge , what is the value of that maximum? 3-3 ( HRW 22-26) Charge is uniformly distributed around a ring of radius
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Unformatted text preview: , and the resulting electric field magnitude E is measured along the ring's central axis (perpendicular to the plane of the ring). At what distance from the ring's center is E maximum? 3-4 ( HRW 22-38) A circular plastic disk with radius has a uniformly distributed charge on one face. A circular ring of width 30 μm is centered on that face, with the center of that width at radius . In coulombs, what charge is contained within the width of the ring? 3-5 ( HRW 22-65) Two particles, each with a charge of magnitude 12 nC, are at two of the vertices of an equilateral triangle with edge length 2.0 m. What is the magnitude of the electric field at the third vertex if (a) both charges are positive and (b) one charge is positive and the other is negative? Figure 22-35...
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