Find (a) the direction and (b) the magnitude of the net electric field at the center of
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Find (a) the direction and (b) the magnitude of the net electric field at the center of the equilateral triangle in Figure 19-40. Give your answers in terms of the angle θ, as defined in Figure 19-40, and E, the magnitude of the electric field produced by any one of the charges at the center of the triangle.
Figure 19-40
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91 = +q 13 21 X. 93 = +q 92 = -9
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