Decide to actually levitate the sphere using two oppositely charged plates to create the uniform electric field. If you have the plates close together compared to their size, what charge density do they need to have in nC/m2 to create the field?

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Boiling water is an example of physical change. true or false

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: