A particle with mass $1\mathrm{.}81{10}^{-3}kg$ and a charge of $1\mathrm{.}22{10}^{-8}C$ has, at a given instant, a velocity vec$(v)=(3\mathrm{.}00{10}^4\frac{m}{s})hat(j).$

Part B

What is the direction of the particle's acceleration?

$+$hat$(i)$

$-$hat$(i)$

$+$hat$(j)$

$-$hat$(j)$

$+$hat$(k)$

$-$hat$(k)$

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