I need this asap

Part A A negative point charge q1 = -4.00 nC is on the x-axis at r = 0.60m. A second point charge q2 is on the x-axis at a = -1.20m. What must the sign and magnitude of q2 be for the net electric field at the origin to be 50.0 N/C' in the +x-direction? IVO AEQ 0 0 ? 92 = C Submit Request Answer Part B What must the sign and magnitude of q2 be for the net electric field at the origin to be 50.0 N/C in the -x-direction? IVO 0 0 ? 92 = C Submit Request