Question

2. Unlike on Earth-where electromagnetic forces dominate our lives--in space gravity is the dominant force. a. Compare the gravitational force between two electrons to their electric attraction. (Hint: Google Coulomb's Law, charge of an electron, and mass of an electron, and plug in the numbers.) The difference is massive-this is a fundamental truth about our universe. Calculate the mass of the electron necessary to make the gravitational attraction and electrical repulsion of two electrons equal. b. The only reason gravity becomes stronger than electromagnetism is because masses grow vastly larger than net charge at large scales. Why do you think this is? (There is no right answer, just give me a couple of sentences of speculation.)

Answer 1