Question

Fluid dynamics

Answer 1

This is very similar to the answer I gave you before.

The velocity of the fluid through an orifice in an OPEN container is

s=sqrt(2gh)

in THIS case the container is not open, and has a gauge pressure of air above the water.

So - oyu could use Bernoulli equation (it links Pressure, height and velocity) and get the velocity from that.

The pressure in the closed tank is equivalent to having extra height in an open tank - so if you calculate the equivalent extra head of 12N/cm^2 (why on earth dont your courses use standard units!!?) then you can use the equation above.

Bernoulli is the correct approach to this.