Question

Water flows through a 3.40 cm diameter hose at 1.20×10−4 m3/s .

what is the flow speed

Answer 1

The flow rate is defined as the volume of fluid passing through the area per unit of time.

`Q=(dV)/(dt)=(Adl)/(dt)=A(dl)/(dt)=Av`
Where A is the surface is the surface area, l is the length of a cylinder, and v is speed flow.
If we solve the equation for speed flow we get:

`v=(Q)/(A)`

`v=(Q)/( \pi r^2)`
When we plug in the numbers we get:

`v=0.033(m)/(s)`