Problem: A small sphere with a mass of 4.00 x 10-6 kg and carrying a charge of 5.00 x 10-8 C hangs from a thread near a very large, charged insulating sheet. The charge density on the surface of the sheet is uniform and equal to 2.50 x 10-9 C/m2.
Part A: Find the angle of the thread.
Please show me how you solve the problem.