two stationary positive point charges, charge 1 of magnitude 3.70 nc and charge 2 of magnitude 1.95 nc , are separated by a distance of 57.0 cm . an electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. part a what is the speed vfinal of the electron when it is 10.0 cm from charge 1? express your answer in meters per second.