# Magnetic fields

by athenaroa
Tags: fields, magnetic
 P: 11 A Fe+ ion is traveling at 200 m/sec in a direction 20 deg south of west at a point. The magnetic field at that point is 0.4 T directed at 10 deg west of south. What is the instantaneous magnetic force that acts on the Fe is how many newtons?
 P: 1,004 The magnetic force on a charge that travels through a magnetic field is: $$\vec F_m = q\vec V \times \vec B = q|V||B|\sin \alpha$$ ([itex]\alpha[/tex] being the angle between the field vector and the velocity vector of course.)
Emeritus
 Originally posted by Chen The magnetic force on a charge that travels through a magnetic field is: $$\vec F_m = q\vec B \times \vec V = q|B||V|\sin \alpha$$ ([itex]\alpha[/tex] being the angle between the field vector and the velocity vector of course.)