Before entering a mass spectrometer, ions pass through a velocity selector consi

Question

Before entering a mass spectrometer, ions pass through a velocity selector consisting of parallel plates separated by 1.8 mm and having a potential difference of 105 V. The magnetic field between the plates is 0.42 T. The magnetic field in the mass spectrometer is 1.2 T.

A)  Find the speed of the ions entering the mass spectrometer. answer has to be in m/s

B) Find the difference in the diameters of the orbits of singly ionized 238U and 235U. (The mass of a 235U ion is 3.903 x 10-25 kg.)

Answer has to be in mm

Explanation / Answer

18.6 mm

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