Bernoulli energy equation

[logistic_guy]

here is the question

Water at \(\displaystyle 120\) kPa (gage) is flowing in a horizontal pipe at a velocity of \(\displaystyle 1.15\) m/s. The pipe makes a \(\displaystyle 90^{\circ}\) angle at the exit and the water exits the pipe vertically into the air. The maximum height the water jet can rise is

(a) \(\displaystyle 6.9\) m
(b) \(\displaystyle 7.8\) m
(c) \(\displaystyle 9.4\) m
(d) \(\displaystyle 11.5\) m
(e) \(\displaystyle 12.3\) m


my attemb
this question can be solved by Bernoulli equation
\(\displaystyle \frac{v^2}{2} + gz + \frac{p}{\rho}\)
the density \(\displaystyle \rho\) isn't given
is it correct to assume density of water \(\displaystyle 1000\) kg/m\(\displaystyle ^3\)?

 

[khansaheb]

here is the question

Water at \(\displaystyle 120\) kPa (gage) is flowing in a horizontal pipe at a velocity of \(\displaystyle 1.15\) m/s. The pipe makes a \(\displaystyle 90^{\circ}\) angle at the exit and the water exits the pipe vertically into the air. The maximum height the water jet can rise is

(a) \(\displaystyle 6.9\) m
(b) \(\displaystyle 7.8\) m
(c) \(\displaystyle 9.4\) m
(d) \(\displaystyle 11.5\) m
(e) \(\displaystyle 12.3\) m


my attemb
this question can be solved by Bernoulli equation
\(\displaystyle \frac{v^2}{2} + gz + \frac{p}{\rho}\)
the density \(\displaystyle \rho\) isn't given
is it correct to assume density of water \(\displaystyle 1000\) kg/m\(\displaystyle ^3\)?

Yes...