Part A

An electron with speed $2\mathrm{.}10{10}^7\frac{m}{s}$ is traveling parallel to a uniform

electric field of magnitude $1\mathrm{.}20{10}^4\frac{N}{C}.$

How far will the electron travel before it stops?

$x=$

m

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Part B

How much time will elapse before it returns to its starting point?

$t=$

s

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