Here's the problem: A particle with a charge of 4.4nC is in a uniform electric field E directed to the left. It is released from rest and moves to the left. After it has moved 6.00 cm, its kinetic energy is found to be 3E-6 Joules. a) What work was done by the electric force? .000003 J b) What is the potential of the starting oint with respect to the endpoint? 681.818 J I got these parts correct, but am having trouble with part c. c) What is the magnitude of E? Could someone give me a hint?? Thanks!!