Answer
$187nm/s$
Work Step by Step
We can find the required speed as follows:
Given that $Q=110g/h=3.056\times 10^{-5}Kg/s$
Now $v=\frac{4Q}{n\pi \rho D^2}$
We plug in the known values to obtain:
$v=\frac{4(3.056\times 10^{-5})}{2000\pi (1040)(1\times 10^{-4})^2}$
This simplifies to:
$v=187nm/s$