Answer:
The flow velocity is

The gauge pressure is
Step-by-step explanation:
The diagram for this question is shown on the first uploaded image
From the question we are told that
The gauge pressure

The speed of flow is

The diameter of the pipe is

The diameter at the top floor is

The the height from the ground is

So we are going to make some assumption
We would assume that the position on the street is A
and the position on the top floor is B
So from continuity equation the velocity of the flow in the street is

Where
is the area of the pipe at the base
So

and
i the area of the pipe at the top floor

substituting values

So



Applying Bernoulli's equation

Since the pipe started from the floor

Here the
is the density of water with value

Substituting values



Converting back to atm
