Question: Three point charges all with q = -8.2 C are located as shown in Figure P17.21 with L = 4.5 m. What are the magnitude

Three point charges all with q = -8.2 C are located as shown in Figure P17.21 with L = 4.5 m. What are the magnitude and direction of the electric field?

(a) At the origin and?

(b) At the point y = 6.8 m on the y axis?

Figure P17.21

? y -L- L-

y -L- L-

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