7) Suppose a mangetic field of 7.45 mT is pointing into a piece of paper and then we shoot a small charged metal ball, 4.8 grams and +1.52 uC, from left to right at a speed of 1200 m/s.
a) What is the magnitude and direction of the force on the particle? If this particle were to bend into a circular path in the field, how large is the circle's radius and is the path clockwise or counterclockwise?
b) Now repeat parts a and b but with an electron instead of a metal ball.