College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 22

A particle passes through a mass spectrometer as illustrated in Figure P19.36. The electric field between the plates of the velocity selector has a magnitude of 8 250 V/m, and the magnetic fields in both the velocity selector and the deflection chamber have magnitudes of 0.093 1 T. In the deflection chamber the particle strikes a photographic plate 39.6 cm removed from its exit point after traveling in a semicircle. (a) What is the mass-to-charge ratio of the particle (b) What is the mass of the particle if it is doubly ionized (c) What is its identity, assuming it's an element