Fluid Flow: Water flows through a horizontal pipe of cross-sectional area 10.0 cm2 at a pressure of 0.250 atm with a flow rate is 1.00 L/s. At a valve, the effective cross-sectional area of the pipe is reduced to 5.00 cm2. What is the pressure at the valve? The density of water is 1000 kg/m3, and treat it as an ideal incompressible fluid.
A. 0.110 atm
B. 0.235 atm
C. 0.200 atm
D. 0.157 atm
E. 7700 Pa
Answer: B
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