A. Four equal particles with positive charge q = 14.418x10-19 C and mass m = 81.99x10-31 kg are initially held at the four corners of a square of side L = 0.07 m. What is the total electric potential at the center of the square? (in V)

B. If these particles are released simultaneously, what will be their speed when they have separated by a very large distance? You may neglect gravitational effects. in (m/s)