An electron moves through a uniform electric field E $=(2\mathrm{.}20+4\mathrm{.}60)$ V$/$m and a uniform magnetic field B $=0\mathrm{.}400$ T$.$ Determine the acceleration of the electron when it has a velocity v $=8\mathrm{.}0$ m$/$s$.($Give each component in m$/$s$2.)$ ax$=$ m$/$s$2$ay$=$ Check the direction of the magnetic force carefully. m$/$s$2$az$=$ m$/$s$2($b$)$ What If$?$ For the electron moving along the x$-$axis in the fields in part $($a$),$ what speed $($in m$/$s$)$ would result in the electron also experiencing an acceleration directed along the x$-$axis? m$/$s