1. Two balloons are charged with an identical quantity and type of charge: -0.0075 C. They are held apart at a separation distance of
8 m. Determine the magnitude of the electrical force of repulsion
between them.

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: