Physics

Problem

In a vertical water line, the stagnation probe is situated

0.40\,\text{m}

above a side tapping that senses the static pressure. Both points are connected to a mercury manometer, which shows a level difference of

15\,\text{cm}

of mercury. Take

\rho_{\text{water}} = 1000\,\text{kg m}^{-3}

\rho_{\text{Hg}} = 13\,600\,\text{kg m}^{-3}

and

g = 9.8\,\text{m s}^{-2}

. Calculate the flow speed in the line. a)

5.4\,\text{m s}^{-1}

6.7\,\text{m s}^{-1}

9.8\,\text{m s}^{-1}

4.7\,\text{m s}^{-1}