A uniform magnetic field , with magnitude 1.2 mT, is directed vertically upward throughout the volume of a laboratory chamber. A proton with kinetic energy 5.3 MeV enters the chamber, moving horizontally from south to north. What magnetic deflecting force acts on the proton as it enters the chamber? The proton mass is 1.67x10-27 kg. (Neglect Earth's magnetic field.) Recall that 1 eV = 1.6 x 10-19 C is a unit of energy. Enter your result as x.xE-yy with no units (your units should be in N)