At a given instant, a particle with a mass of 5.00 x 10^-3 kg and a charge of 3.50 x 10^-8 C has a velocity of magnitude 2.00 x 10^5 m/s in the +y direction. It is moving in a uniform magnetic field that has a magnitude of 0.8 T and is in the -x direction.
A. What is the magnitude and direction of the magnetic force on the particle.
B. What is its resulting acceleration?