Question 18 of 21 In the mass spectrometer shown in the figure, a particle with X charge -e = -1.60 x 10" C enters a region of magnetic Velocity Selector field Bc that has a strength of 0.00265 T and points into the XI Macmillan Learning screen. The velocity v of the particle is confirmed with a velocity selector. The electric field E is 9.00 x 104 V/m FO (down) and the magnetic field By is 0.00550 T (into screen) X in the velocity selector. If the radius r of curvature of the particle is 4.00 cm, calculate the mass m of the particle. m = kg 23/0 Q Rechercher hp