In a certain region of space, there is a uniform electric field, E = 4.28 x 104 V/m directed due east, and a uniform magnetic field B = 0.071 T, also directed due east. What is the magnitude of the electromagnetic force on an electron moving due south with a velocity of 3.09 x 106 m/s?
Fb = qB(v*sinθ), where Fb is the force of the magnetic field, B is the magnitude of the magnetic field, v is the velocity.
Fb + Fe = F(electromagnetic force)
The Attempt at a Solution
I determined that the electric field would generate a westward force on the electron, and the magnetic field would exert a force into the page. I tried to use the relationship Fb + Fe = Ftotal and got 4.20*10^-14 N, but it was wrong. I'm not really sure what else to try.