In the figure, water flows through a horizontal pipe and then out into the atmosphere at a speed v1 = 16.0 m/s. The diameters of the left and right sections of the pipe are 5.20 cm and 3.00 cm. (a) What volume of water flows into the atmosphere during a 10 min period? In the left section of the pipe, what are (b) the speed v2 and (c) the gauge pressure?
The relationship between flow rate (Q )and velocity is
Where, A is area of cross section of the pipe
Area of the left cross section :
Area of right cross section of pipe :
From the continuity equation
or,
Given,
So,
For the right end of pipe
For left end of pipe ,
(a) The volume of water flows into the atmosphere during a 10 min period will be
(b) The speed , as calculated above, is 5.3 m/s .
(c) Gauge pressure is given by
Where, is density of fluid, for water it is 1000 kg/m3 .
To find the pressure in the left section, use Bernoulli’s equation:
Here,
So,
or,
Here,
So,
Hence, gauge pressure at the left end of pipe will be
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In the figure, water flows through a horizontal pipe and then out into the atmosphere at...
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