1.)what is the magnitude of the force experienced by a proton moving at 3 km/s inside magnetic field of strength 0.05T

2.)an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the velocity of the electron and the field make an angle of 45 degree.

2 answers

Hey, I answered this hours ago:
http://www.jiskha.com/display.cgi?id=1442934045
Please Complete Solution please i don't understand.