Physics, 17.01.2020 01:31, gtamods402
A7.5-cm-diameter horizontal pipe gradually narrows to 4.5 cm . when water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0 kpa and 25.0 kpa , respectively. what is the volume rate of flow?
Answers: 1
from continuity equation we can write as 
![P_1-P_2=\frac{\rho }{2}\left [ v_2^2-v_1^2\right ]](/tpl/images/0458/5391/b9f0a.png)
![P_1-P_2=\frac{\rho }{2}\left [ v_2^2-(\frac{A_2}{A_1})^2v_1^2\right ]](/tpl/images/0458/5391/a5926.png)
![(31-25)\times 10^3=\frac{10^3}{2}\left [ v_2^2-(0.3599)^2v_2^2\right ]](/tpl/images/0458/5391/5a6b0.png)
![6\times 2=v_2^2=\left [ 1-0.359^2\right ]](/tpl/images/0458/5391/c5fdb.png)
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A7.5-cm-diameter horizontal pipe gradually narrows to 4.5 cm . when water flows through this pipe at...
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