15 Do by Thursday Example 6: A particle moving downward at a speed of 6.0 x 10'm/s enters a uniform magnetic field that is horizontal and directed from east to west. (a) If the particle is deflected initially to the north in a circular arc, is its charge positive or negative? (b) If B = 0.25 T and the charge-to-mass ratio (q/m) of the particle is 4.0 x 107C/kg, what is the radius of the path? (c) What is the speed of the particle after it has moved in the field for 1.0x 10-5s?1 0 x 10-5s? for 2.0 s? Answer (a) negative charge (b). 0.0m (c). Same speed= 6.0 x 10*m/s positive verone elfenix mumixsM