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Two charges Q1 = 5x10-6 C and Q2 = 13x10-6 C are separated by a distance...

Two charges Q1 = 5x10-6 C and Q2 = 13x10-6 C are separated by a distance of 0.8m (Take Q2 to be located on the right hand side of Q1).

a. Calculate the net (i.e., total) force exerted by these two charges on a third charge Q3 = -3x10-6 C located halfway between Q1 and Q2.

b. Find the position at which Q3 must be placed so the net force on it (due to Q1 and Q2) is zero (i.e., calculate the distance x from Q1 to Q3).

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