posted by Mary .
A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 2.9 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge.
Well, the forces are perpendicular, so use resultantforce=sqrt (Fe^2 + Fb^2)
check my thinking. I forever get right hand rules messed up.