Question

What gauge pressure is required in the city water mains for a stream from a fire hose connected to the mains to reach a vertical height of 15.0 m

Answer 1

The gauge pressure is 147000 Pa.

Step-by-step explanation:

Height, h = 15 m

density of water, d= 1000 kg/m^3

gravity, g = 9.8 m/s^2

The gauge pressure is the pressure exerted by the fluid.

The pressure exerted by the fluid is given by

P = h d g

P = 15 x 1000 x 9.8 = 147000 Pa

Answer 2

The gauge pressure is equal to 147 kPa.

Step-by-step explanation:

The pressure exerted by fluid is given by :

`P=\rho gh`

Where

`\rho` is density of water

h is height

So, put all the values,

`P=1000* 9.8* 15\\\\P=147000\ Pa`

or

P = 147 kPa

So, the gauge pressure is equal to 147 kPa.