Answer
$a=2.1\times 10^{17}\frac{m}{s^2}$
Work Step by Step
We know that:
$ma=eE=\frac{e\lambda}{2\pi \epsilon{\circ}r}$
This can be rearranged as:
$a=\frac{e\lambda}{2\pi \epsilon{\circ}rm}$
We plug in the known values to obtain:
$a=\frac{1.6\times 10^{-19}\times6.0\times 10^{-6}}{2(3.1416)\times 8.85\times 10^{-12}\times 0.090\times 9\times 10^{-31}}=2.1\times 10^{17}\frac{m}{s^2}$