A wire carries a 11.2 A current at an angle 90.0° from the direction of a magnetic field. If the magnitude of the magnetic force on a 4.8 m length of the wire is 15.0 N, what is the strength of the magnetic field?

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