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Electric Field and Potential Question

These are the correct answers for this question, I just am not sure about the steps how to arrive at them!

17. (6 pts) Two particles are fixed in the x-y plane as shown The units on the x and y axes are meters. 19 19 1-1.60 x 10 C, determine: C and q2+4.80 X 10 (a) the direction of the electric field at certain location, A, (b) the electric potential at a second location, C, (c) the work done by the electrostatic force when a third charge q3 +3.60 X 10 1C is moved from A to C? 19 A) between 0 and 90 degrees B) between 90 and 180 degrees C) between 180 and 270 degrees D) between 270 and 360 degrees E) the net electric field is zero A) +6.94X 1011 V B) -7.44X 10-10 V C) +7.44X 1010 V D) -6.94 X 10-1 V E) 8.63 X 1010 V A) zero J B) +6.75×10-28J C) -6.75×10-28 J D) +2.43×10-28 J E) -2.43 X 1028 J 17a 17b 17c.E

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