Multiple-Concept Example 4 deals with the concepts that are important in this problem. As illustrated in the figure, a negatively charged particle is released from rest at point B and accelerates until it reaches point A. The mass and charge of the particle are 4.17 x 10-4 kg and -2.10 x 10- C, respectively. Only the gravitational force and the electrostatic force act on the particle, which moves on a horizontal straight line without rotating. The electric potential at A is 36.0 V greater than that at B; in other words, VA - VB = 36.0 V. What is the translational speed of the particle at point A? B Up = 0 m/s Number UnitsThe potential at location A is 493 V. A positively charged particle is released there from rest and arrives at location B with a speed V3. The potential at location C is 894 V, and when released from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2 VB. Find the potential at B. Number n Units 6 The drawing shows a square, each side of which has a length of L = 0.250 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -3.00 x 10-9 C placed at corner A and then at corner B. B 91 = +1.50 x10-9C 92=+4.00 x 10-9c EPEA = A EPEB =