Suppose a new particle is discovered, and it is found that a beam of these particles passes undeflected through "crossed" electric and magnetic fields, where E=305 V/m and B = 0.00495 T. If the electic field is turned off, the particles move in the magnetic field in circular paths of radius r=2.67 cm Determine q/m for the particles from these data. answer in units of C/kg.