Question

Water flows through a nozzle at the end of a fire hose. If the nozzle exit velocity must be 20 m/s and the exit diameter is 40 mm, determine the minimum flow rate that the pump must provide.

Answer 1

minimum flow rate provided by pump is 0.02513 m^3/s

Step-by-step explanation:

Given data:

Exit velocity of nozzle = 20m/s

Exit diameter = 40 mm

We know that flow rate Q is given as

`Q = A * V`

where A is Area

`A =(\pi)/(4) * (40* 10^(-3))^2 = 1.256* 10^(-3) m^2`

`Q = 1.256* 10^(-3) * 20 = 0.02513 m^3/s`

minimum flow rate provided by pump is 0.02513 m^3/s