1. Vector has magnitude of 8units and makes an angle of 45° with the negative x-axis also has the same magnitude of 8units and directed along the negative x-axis. Find a. The magnitude and direction of  + B b. The magnitude and direction of A-B

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: