An alpha particle is moving at a speed of 5x105 m/s in a direction perpendicular to a uniform magnetic field of strength 9x10-2 T. The charge on an alpha particle is 3.8x10-19 C and its mass is 5.9x10-27 kg.
(a) The radius of the path of the alpha particle is?
(b) The time it takes the alpha particle to complete one revolution around its path is?
(c) The centripetal force the alpha particle experiences is?