Q1. A force vector points at an angle of 50.6° above the +x axis. It has a y component of +280 newtons. Calculate the magnitude of the force vector.
Q2. Two point charges have a total charge of 280 microC . When placed 1.94m apart, the force each exerts on the other is 27.2 N and is repulsive. What is the charge on each?
Q3. A metal sphere has a charge of +9.0C. What is the net charge after 9.8 x 10^13 electrons have been placed on it?