Dielectrophoresis is a phenomenon where forces are exerted on a particle that is subjected to a non-uniform electric field. In such a case, three force fields are acting simultaneously on a particle positioned at the origin. The forces fields can be described as: = (xy+1, y-2, yz+3) F has constant magnitude 9 and acts in direction (-2, 2, 1) F3 - 41 - 81, = F = Find the resultant force that acts on the particle. What additional force must be imposed to reduce the resultant to zero?