Apoint charge with charge q1 is held stationary at the origin. a second point charge with charge q2 moves from the point (x1, 0) to the point (x2, y2). use k for coulomb's constant rather than writing it out as (1/4πϵ0).how much work w is done by the electrostatic force on the moving point charge? express your answer in joules. use k for coulomb's constant.