Question

9. A sealed tank containing seawater to a height of 11.0 m also contains air above the water at a gauge pressure of 3.00 atm. Water flows out from the bottom through a small hole. How fast is this water moving?

Answer 1

$p+\rho gh=\frac{\rho v^2}2,$

$v=\sqrt{\frac{2p}{\rho}+2gh}=28.3~\frac ms.$