A particle passes through a mass spectrometer as illustrated in Figure P19.36. The electric fi eld between the plates of the velocity selector has a magnitude of 8 250 V/m, and the magnetic fi elds in both the velocity selector and the defl ection chamber have magnitudes of 0.093 1 T. In the defl ection 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-tocharge ratio of the particle? (b) What is the mass of the particle if it is doubly ionized? (c) What is its identity, assuming its an element?
Week 3 Tuesday, September 6, 2016 11:04 AM • Same dir w Fe if q>0 Opp dir w Fe if q<0 • • The electric field vector is tangent to the electric field lines at each point • Number of electric field lines per unit area through a surface perpendicular to the lines is proportional to the strength of the electric field in a given region • E vector strong when lines close(& high density) and weak when far(& low density) • Total number lines proportional to charge • If source charge pos, lines radiate outward radically in all dir ○ If neg, radial lines point inward to infinity ○ If group of charges, lines start at pos and end at neg