Homework #1 - Part II

# Homework #1 - Part II - 19.6. Five point charges, q1 = + q,...

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19.6. Five point charges, qq q q q q q q 12 3 4 234 =+ = + = − = − ,,,, and 5 5 = − , are placed in the vicinity of an insulating spherical shell with a charge + Q , distributed uniformly over its surface, as indicated in Figure 19–27 . Rank the point charges in order of increasing magnitude of the force exerted on them by the sphere. Indicate ties where appropriate. 19. 13. • A sphere of radius 4.22 cm and uniform surface charge density + 121 2 . µ Cm exerts an electrostatic force of magnitude 46 9 10 3 . × N on a point charge + 175 . C. Find the separation between the point charge and the center of the sphere. 19.17. •• Find the orbital radius for which the kinetic energy of the electron in Example 19–1 is 1.51 eV. ( Note: 11 1 6 1 0 19 eV electron volt J. =− = × . ) 19. 27. •• Four point charges are located at the corners of a square with sides of length a . Two of the charges are + q , and two are q . Find the magnitude and direction of the net electric force exerted on a charge + Q

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## This note was uploaded on 05/02/2008 for the course PHYS 107 taught by Professor Chen during the Spring '07 term at Ill. Chicago.

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Homework #1 - Part II - 19.6. Five point charges, q1 = + q,...

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