View Policies Current Attempt in Progress A positively charged particle of mass 7.99 x 10% kg is traveling due east with a speed of 87.5 mv/'s and enters a 0.228 1 uniform magnetic field. The particle moves throughone quarter of a circle in a time of 1.25 x 10s. at which time it leaves the held heading dise south All during the motion the particle moves perpendicular to the magnetic field. (a] What is the magnitude of the magnetic force acting on the particle? (b) Determine the magnitude of its charge. lout of screen) (a) Number Units (b) Number Units