Unformatted text preview: If a fifth point charge –q is placed a distance z above the midpoint of the square what will be the force on it. If z<<L show that the negative charge will undergo SHM and find the frequency of oscillations. Assume that the charges forming the square are fixed in place. 4) Consider a infinite cylinder of radius R and uniform charge density ρ with the axis of the cylinder aligned along the x axis. A sphere of radius R/2 centered at the origin is cut out of the cylinder. Find the electric field everywhere. How much energy would it take to bring a charge Q from the point (x,y,z)=(2R, 3R,0) to the point (x,y,z)=(2R,R,0)?...
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 Spring '08
 Packard
 Physics, Electric charge, Fundamental physics concepts, uniform charge density, parallel square plates

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