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Statement of a problem № 10890

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The ion source in a mass spectrometer produces both singly and doubly ionized species, X+ and X2+. The difference in mass between these species is too small to be detected. Both species are accelerated through the same electric potential difference, and both experience the same magnetic field, which causes them to move on circular paths. The radius of the path for the species X+ is r1, while the radius for species X2+ is r2. Find the ratio r1/r2 of the radii.




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