What is the magnitude of the resulting force on the -3 nC charge at the origin? Answer in units of nN. y (m) 10 987 6 + 32 8 + 68 nC 5 4 1 0 6 0 -3 nC ++ 8 nC OH 1 2 3 4 5 6 7 8 9 10 X (m)