$$v = Q / A$$
Where:
* $$v$$ is the velocity of the fluid (in meters per second),
* $$Q$$ is the volumetric flow rate (in cubic meters per second) and
* $$A$$ is the cross-sectional area of the pipe (in square meters).
The height of the fluid in the pipe is given by the equation:
$$h = P / \rho g$$
Where:
* $$h$$ is the height of the fluid (in meters),
* $$P$$ is the pressure of the fluid (in pascals),
* $$\rho$$ is the density of the fluid (in kilograms per cubic meters) and
* $$g$$ is the acceleration due to gravity (in meters per second squared).
