1. A beta particle (high-speed electron) is traveling at right angles to a 0.43 T magnetic field. It has a speed of 2.5 107 m/s. What size force acts on the particle?
2. A magnetic field of 27 T acts in a direction due west. An electron is traveling due south at 7.0 105 m/s. What are the magnitude and direction of the force acting on the electron?