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Question 5 In the figure particle 1 of charge q1-7.77q nd particle 2 ofcharge q23.77q are fixed to an x axis. As a multiple of distance L, at what coordinate on the axis is the net electric field of the particles zero? 12 Number UnitsQuestion6 In the figure a thin glass rod forms a semicircle of radius r- 2.37 cm. Charge is uniformly distributed along the rod, with +q1.17 pC in the upper half and-q =-1.17 pC in the lower half. What is the magnitude of the electric field at P, the center of the semicircle? Number UnitsQuestion7 An electric dipole consists of charges +2e and -2e separated by 0.98 nm. It is in an electric field of strength 4.7x 106 N/C. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to, (b) perpendicular to, and (c) antiparallel to the electric field. (a) Number Units (b) Number Units (c) Number Units

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