Magnetic field lines originate from the South Pole of a magnet, and form closed loops to the North Pole of a magnet. True or False

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Photons with the highest energy have the longest period

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.