Unformatted text preview: 5. A point charge q is located a large distance r from a neutral atom of polarizability a . Calculate the force between them. 6. A dipole p is a distance r from a point charge q and oriented so that p makes an angle with the vector r from q to p . (a) Calculate the force on p . (b) Calculate the force on q . (c) Is Newtons third law ok here? 7. A sphere of radius R carries a polarization P ( r ) = k r , where k is a constant and r is the vector from the center. (a) Calculate the bound charge densities b and b . (b) Calculate the electric field inside and outside the sphere. 8. A thick spherical shell (inner radius a and outer radius b) is made of dielectric material with a frozen in polarization P ( r ) = ( k / r ) r ^ , where k is a constant and r is the distance from the center. No free charge exists here. (a) Calculate the electric field in all three regions. (b) Calculate all bound charges....
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 Fall '10
 LOWELLWOOD
 Charge, Work, Electric charge, Fundamental physics concepts, electric dipole moment, dipole moment

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