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What must be the sign and magnitude of ( for the resultant electric field at the origin to be 48.5 N/C in the + 2 direction? Express your answer In coulombs. A-5.05 mC point charge is on the x axis at I = 1.20 m A second point charge @ is on the r nois at -0.600 m. IVO Submit Previous Araners Bequest Answer X Incorrect: Try Again; 3 attempts remaining Part B What must be the sign and magnitude of Q for the resultant electric field at the origin to be 40 5.N/C In the -r direction? Express your answer in coulombe