A mass ion source generates with masses of $3\mathrm{.}2$ x $10^-$²²⁵ kg and of $+2$ e .The charged particles are accelerated through an electrical field and acquire an of $0\mathrm{.}40$ MeV. Then, the pass through a uniform field of magnitude $1\mathrm{.}00$ T$.$ Find i$)$ the speed and ii$)$ the radius of the circular path of the particles