An electron that has a velocity with $x$ component $2\mathrm{.}2{10}^6\frac{m}{s}$ and $y$ component $3\mathrm{.}4{10}^6\frac{m}{s}$ moves through a uniform magnetic field with $x$ component $0\mathrm{.}030$ T and $y$ component $-0\mathrm{.}21$ T$.($a$)$ Find $z$ component of the magnetic force on the electron. $($b$)$ Repeat your calculation for a proton having the same velocity.

$($a$)$ Number

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$($b$)$ Number

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