A particle with charge +4.20 nC is in a uniform electric field E directed to the left. The charge is released from rest and moves to the left; after it has moved 6.00 cm, its kinetic energy is +2.20×10^−6 J. a)What is the work done by the electric force? b)What is the potential of the starting point with respect to the end point? c)What is the magnitude of E→

A particle with charge +4.20 nC is in a uniform electric field E directed to the left. The charge is released from rest and moves to the left; after it has moved 6.00 cm, its kinetic energy is +2.20×10^−6 J. a)What is the work done by the electric force? b)What is the potential of the starting point with respect to the end point? c)What is the magnitude of E→