Point charge q1 of 30 nc is separated by 50 cm from point charge q2 of -45 nc. as shown in the diagram, point a is located 30 cm from q1 and 20 cm q2. what are the magnitude and direction of the electric field at point a? let the electrostatic constant k= 8.99 x 10^9 n x m^2/c^2

E1 =  2996.667N/C E2 = 11237.5N/C

Explanation:

E1 = kQ1/r^2

  =8.99 x 10^9 x 30 x 10^-9/(30x10^-2)^2

  = 2996.667N/C

E2 = kQ2/r^2

      = 8.99 x 10^9 x 50 x 10^-9/(20x10^-2)^2

      = 11237.5N/C

The direction are towards the point a

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over