(Solved): A certain particle is sent into a uniform magnetic field, with the particle's ...

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A certain particle is sent into a uniform magnetic field, with the particle's velocity vector perpendicular to the direction of the field. The figure gives the period \( T \) of the particle's motion versus the inverse of the field magnitude \( B \). The vertical axis scale is set by \( T_{5}= \) \( 22.8 \mathrm{~ns} \), and the horizontal axis scale is set by \( B_{s}^{-1}=4.4 \mathrm{~T}^{-1} \). What is the ratio \( \mathrm{m} / \mathrm{q} \) of the particle's mass to the magnitude of its charge?