Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square? Select one: O a. B O b. The field is equal to zero at point P. O C. A O d. C O e. D

Three point charges are aligned along the x axis as shown in the figure below. -0.500 m- -4.00 nC (a) (0, 1.40 m) E = 14.6 X 0.800 m- 5.00 nC Find the electric field at the following position. (Enter your answer as a sum of i-hat and j-hat vectors.) N/C 3.00 nC x

A small, 2 g plastic ball carrying a charge 5c is suspended by a 20 cm long string in a uniform electric field If the ball is in equilibrium when the 0=15° , the magnitude of E= E 15.0° Select one: O a. 1 N/c b. 2952000 N/C O c. 1X 10^(-3) N/c O d. 1000 N/c O e. 0.1 N/c