calculate the size of two equal charges that repel each other with a force of 0.1N when situated in 50cm apart in a vacuum. what would be the size of the charge when situated in an insulating medium whose permittivity was ten times of that of a vacuum

Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: