Protons in an atomic nucleus are typically m apart. What is the electric force of repulsion between nuclear protons? The charge of a proton is C.
Two small balls, each of mass 5.0 g, are attached to silk threads 50 cm long, which are in turn tied to the same point on the ceiling, as shown. When the balls are given the same charge , the threads hang at to the vertical. What is the magnitude of ?