Part A A particle with charge 4.80x10-19 C is placed on the x axis in a region where the electric potential due to other charges increases in the +x direction but does not change in the y or z direction. The particle, initially at rest, is acted upon only by the electric force and moves from point a to point b along the x axis, increasing its kinetic energy by 1.28x10-18 J . In what direction and through what potential difference Vi - Va does the particle move? View Available Hint(s) The particle moves to the left through a potential difference of Vo - Va = 2.67 V . The particle moves to the left through a potential difference of Vo - Va = -2.67 V The particle moves to the right through a potential difference of Vo - Va = 2.67 V. The particle moves to the right through a potential difference of Vo - Va = -2.67 V. The particle moves to the left through a potential difference of Vo - Va = 26.7 V. The particle moves to the right through a potential difference of Vo - Va = -26.7 V . Submit Part B If the particle moves from point b to point c in the y direction, what is the change in its potential energy, Uc - U? View Available Hint(s) O + 1.28x10-18 J - 1.28x10-18 J 0 0 Submit