Cities Across the U

question 49

Multiple Choice

Cities across the U.S.supply fresh water to the residents at constant pressure by the use of water towers.If the diameter,d₂,of the pipe coming out of the tower is 25 cm,and the diameter,d₁,of the pipe at your home is 2.0 cm,what is the ratio of the velocity of the water at d₁ compared to d₂? Assume that all the taps are off except yours.

• A)12.5
• B)156
• C)0.0064
• D)0.08
• E)25