Do magnets attract objects in a straight line?

  1. Do magnets attract objects in a straight line?

    a.) magnet dipole - magnet dipole
    b.) magnet dipole - electric charge
    c.) magnet dipole - metal molecule
    d.) magnet dipole - charged metal molecule


    Will any or all of these combination result in a second particle move in a straight line or some kind of a spiral, having in mind Lorentz force (magnetic force of a moving charge) act perpendicular to both velocity and magnetic field vectors?

    http://en.wikipedia.org/wiki/Lorentz_force
    [​IMG]
     
  2. jcsd
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