Part A

A $4\mathrm{.}6{10}^{-4}\frac{V}{m}$ electric field creates a $2\mathrm{.}3{10}^{17}$ electrons$/$s current in a $1\mathrm{.}7-$mm$-$diameter aluminum wire.

What is the drift speed?

Express your answer using two significant figures.

$v_d=$

$\frac{m}{s}$

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Part B

What is the mean time between collisions for electrons in this wire?

Express your answer using two significant figures.

$=$

s