Mass Spectrometer Part A J. J nature of cathode rays. His other important contri

Question

Mass Spectrometer Part A J. J nature of cathode rays. His other important contribution was the invention, together with one of his students, of about the After being accelerated to a speed of 1.00x10% m/s, the particle enters a uniform magnetic field of strength 0.800 T and travels in a circle of radius 32.0 cm (det the screen as shown in the figure). The results of this experiment allow one to find m/q by observing where hts a device that measures the ratio of mass m to (positive) charge q of an ion. The spectrometer consists of two regions as shown in the figure.(Eigure 1) In the first region an electric field accelerates the ion and in the second the ion follows a circular arc in a magnetic field. The radius of curvature of the arc can be measured and then the m/q ratio can be found. Hints m/q= kg/C My Answers Give Up 0 1.

Explanation / Answer

magnetic force = qvB

centripetal force = mv^2/r

if qvB = mv^2/r

m/q = rB/v

m/q = 0.8*0.32/10^5

m/q = 2.56*10^-6 kg /C

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