what are the magnitude and direction of the electrical field strength at point Z in the situation below? negatively charged sphere, x(-2.0*10-5C) is left most, 60 cm to the right of it is a positively charged sphere,Y (8.0*10-6C). Point Z is 30 cm to the right of Y. What I did: First i found E1, where q1= -2*10-5 C and r= 0.90 m (direction is right) Then I found E2, where q2= 8.0*10-6 C and r= 0.30m (direction is left) then i found the vector sum of E1 and E2, and found the field strenth at Z (direction is Left) Is this right??