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Q5 - Physics 2212 Homework 5 (due: March 29) 1. What is the...

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Q5 - Physics 2212 Homework 5 (due: March 29) 1. What is the...

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Physics 2212 Homework 5 (due: March 29) 1. What is the electric potential at the point P? 2. What is the electric potential at the point P? 3. The potential at the center of a 4.0-cm-diameter copper sphere is 500 V, relative to V=0 V at infinity. How much excess charge is on the sphere? 4. Find potential energy for two configurations (a) and (b) shown in Fig. Three particles have the following charges 12 3 1, 5, 1 0 qC q C μ μμ == = . Which configuration has the lower energy? +2 nC P -6 nC 5 cm 5 cm +2 nC 45 0 45 0 +1 nC P +2 nC 1 cm 1 cm 1 cm 10 cm 2 q 10 cm 3 q 1 q (b) 10 cm 10 cm 10 cm 3 q 1 q 2 q (a)
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5. Point charge 11 qC μ = is placed at the center of insulating uniformly charged sphere of radius 1 R m = and total charge 16 QC = − . Find electric potential at distance r = 0.8 m from the center of the sphere, assuming that electric potential is 0 very far from the sphere. 6. Point charge q is placed at the center of insulating uniformly charged sphere of radius R=50 cm and total charge
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