A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 15.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 0 = 13.5° angle with the vertical as indicated, what is the net charge on ball? μC E=1.00 x10³ N/C

A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 15.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 0 = 13.5° angle with the vertical as indicated, what is the net charge on ball? μC E=1.00 x10³ N/C