Water with density $10$

$3$

kg$/$m

$3$

and viscosity $10$

$-3$

kg$/$ms has to flow under the influence

of gravity through a $1600$ m long pipe betw

een two open tanks of which the levels

differ by $14$ m$.$

If the required flow rate is $10$ m

$3$

$/$h$,$ determine the appropr

iate pipe diameter.$\backslash$