$($Single pipe $-$ determine pipe diameter$)$ Water is to flow at a rate of $1\mathrm{.}0\frac{m^3}{s}$ through a rough concrete pipe $)=(2mm$ that connects two ponds. Determine the pipe diameter if the elevation difference between the two ponds is $10m$ and the pipe length is $1000m.$ Neglect minor losses.

$D=$

$$

$m$