An electron experiences a force$$F$=(3\mathrm{.}0$i$2\mathrm{.}3$j$)1013$NF$=(3\mathrm{.}0$i$2\mathrm{.}3$j$)1013$N$$when passing through a magnetic field$$B$=(0\mathrm{.}56$T$)$kB$=(0\mathrm{.}56$T$)$k$.$