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 ?
If both the Earth and the Moon were each given a particular net charge , this would produce a repulsive force between them equal in magnitude to the attractive gravitational force between them. In considering the relationship of gravitational to electrical forces, model Earth and the Moon as point masses of kg and kg respectively.
Determine the magnitude of .
How many electrons would be required to produce the net charge sufficient to counteract the gravitational attraction between Earth and the Moon?