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.

there are no contact forces mentioned on the list of choices that you've provided.

well clustered together.

points close on a scatter diagram