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2. In the diagram below, the net force on the 1.0 at: charge is equal to zero. Determine the sign and magnitude of the unknown charge Q. 3. A charge of+ZQ sits at the origin and a second charge ofQ is placed at x = 1.0 111, as shown in the diagram. At what point on the x axis is the net electric eld equal to zero? +262 Q oo In Himr