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

The gauge pressure is equal to 147 kPa.

Explanation:

The pressure exerted by fluid is given by :

Where

is density of water

h is height

So, put all the values,

or

P = 147 kPa

So, the gauge pressure is equal to 147 kPa.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.