Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the fourteenth floor, 43

Respuesta :

Answer:

The  gauge pressure is  [tex]P = 4.2*10^{5} \ N/m^2[/tex]

Explanation:

From the question we are told that

     The height of the 14th floor from the point where the water entered the building  is  h = 43 m

   

The  gauge pressure is  mathematically represented as

           [tex]P = mgh[/tex]

Where  the m is the mass of the water which is  mathematically represented as  

      [tex]m = \frac{\rho}{V}[/tex]

Where  [tex]\rho[/tex] is the density of the water which has a constant value of  [tex]\rho = 1000 \ kg/m^3[/tex] and this standard value of density the volume is  [tex]1 m^3[/tex] so

     [tex]m = \frac{1000}{1}[/tex]

     [tex]m = 1000 \ kg[/tex]

Thus  

     [tex]P = 1000 * 9.8 * 43[/tex]

     [tex]P = 4.2*10^{5} \ N/m^2[/tex]