What is the reading of the scale after both spheres have been charged, and the student is getting ready to bring the hand-held sphere close to the bottom sphere? consider the moment when the hand-held sphere is about half-way between the handle of the electrophorus and the bottom sphere. use the "pause" and the "frame-by-frame-advance" buttons to navigate to the appropriate part in the video. express your answer in newtons. use three significant figures in your answer.