An electron experiences a force F$=(4\mathrm{.}4$i$2\mathrm{.}4$j$)1013$NF$=(4\mathrm{.}4$i$2\mathrm{.}4$j$)1013$N when passing through a magnetic field B$=(0\mathrm{.}62$T$)$kB$=(0\mathrm{.}62$T$)$k$.$