Water flows through a horizontal cross-sectional pipe (density
1000 kg/m^3
). The pipe’s cross-sectional area reduces from 100cm^2
to 80cm^2
. The pressure before being reduced is 5 kPa and the
velocity flow in section 1 is 4 m/s. What is the pressure at the end
where the pressure is being reduced?
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Answer:
at the place where the water starts to flow