"A 6.50 −μC particle moves through a region of space where an electric field of magnitude 1450 N/C points in the positive x direction, and a magnetic field of magnitude 1.24 T points in the positive z direction. Part A If the net force acting on the particle is 6.25×10−3 N in the positive x direction, find the components of the particle's velocity. Assume the particle's velocity is in the x-y plane."

Will you chech and finish these for me, because i am stumped with them.

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Avoltaic cell converts chemical energy to