Assignment:
A small sphere with mass 1.10 g hangs by a thread between two large parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities +σ and -σ. The charge on the sphere is q = 8.60 * 10-6 C. What potential difference between the plates will cause the thread to assume an angle of 30.0 degrees with the vertical?
Provide complete and step by step solution for the question and show calculations and use formulas.