An electron moves through a uniform magnetic field. The magnetic field is given by B - (0.00 i - 52.0 j + 33.9 k ) mT. At a moment in time when the velocity is " - ( 0.00 i + vy j + 39000.00 k ) m/s, the magnetic force acting on the electron is F = ( 8.61i + 0.00 j + 0.00 k ) x 10-16 N. What is the value of vy? i m/s