A particle with charge +7.60 nC is inside a uniformelectric field directed to the left. Another force, in addition tothe electric force, acts on the particle so that when it isreleased from rest, it moves to the right. After it has moved 8.00cm, the additional force has done6.50∙10-5 J of work and the particlehas 4.35∙10-5 J of kinetic energy. (a)What work was done by the electric force? (b) What is the potentialof the starting point with respect to the end point? (c) What isthe magnitude of the electric field?
