Positive charge is distributed along the entire x axis with a uniform density 12 nc/m. a proton is placed at a position of 1.00 cm away from the line of charge and released from rest. what kinetic energy in ev will it have when it reaches a position of 5.0 cm away from the initial position? (note: use the potential difference equation for an infinite line.) a. 350 ev b. 390 ev c. 350k ev d. 6.2 ev e. 170 e