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Problem 1) Electric force on point charge [45 points] Three point charges 2q, q, q are aligned on the x- axis separated by a distance a as shown below. a) Find the net electric force F on the charge q in the middle. What is the direction of F? b) Assume now that q =1/C and a =1 cm. Use k = = 9x109 N. m C2 Find the magnitude of the force F from part a) in units of newtons (N). 2 9 TO TO K + + + a a X