An electron moves from point a towards point c within a uniform magnetic field as depicted below. what is the general direction of the magnetic force on the electron? assuming the distance between points a and b is 4.50 m, the momentum of the electron is 1.15 x 10-21 kg m/s and the strength of the b-field is 3.2 mt, draw the approximate path taken by the electron within this field.

Your physics assignment is to figure out a way to use electricity to launch a small 6.0-cm-long plastic drink stirrer. you decide that you'll charge the little plastic rod by rubbing it with fur, then hold it near a long, charged wire, as shown in figure p23.56 . when you let go, the electric force of the wire on the plastic rod will shoot it away. suppose you can uniformly charge the plastic stirrer to 10 nc and that the linear charge density of the long wire is 1.0 x10-7 c/m. what is the net electric force on the plastic stirrer if the end closest to the wire is 2.0 cm away?