11_Ch 16 College Physics ProblemCH16 Electrical Energy and Capacitance

11_Ch 16 College Physics ProblemCH16 Electrical Energy and Capacitance

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Electrical Energy and Capacitance 45 16.13 (a) Calling the 2.00 C µ charge , 3 q () 12 3 22 6 26 6 2.00 10 C 8.00 10 C 4.00 10 C 8.99 0. 0 m 0.030 0 m 0.060 0 0.030 0 m 2.67 ei i i kq q r V −−   ==+  × × + + + 9 2 6 N m 10 C 10 V e q Vk rr 060 q + + ⋅× (b) Replacing 2 in part (a) yields 6 .00 10 C by 2.00 10 C ×− × 6 6 13 2. V 16.14 f i WqV qV V =∆ = 0 f V = , and since the 8.00 C is infinite distance from other charges. 6 9 2 2.00 10 C N m 4.00 10 C C 0.030 0 m 0.030 0 0.060 0 m × × + + 6 1.135 ie qq =+ ( 8.99 = Thus, )( ) 66 35 9.08 J × = 8.00 10 W C 0 1.1 16.15 (a) 29 9 9
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