phys
posted by ami .
Water flows steadily from an open tank into a pipe as shown in the figure. The elevation of the top of the tank is 12.3 m, and the elevation at the pipe is 3.80 m. The initial crosssectional area of the pipe (at point 2) is 5.60×10−2 m^2; and at where the water is discharged from the pipe (at point 3), it is 1.40×10−2 m^2. The crosssectional area of the tank is very large compared with the crosssectional area of the pipe.
Q: Assuming that Bernoulli's equation applies, compute the volume of water DeltaV that flows across the exit of the pipe in the time interval 4.40 s.

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the pipe has a cross sesctional are of 1.6cm^2.
The water comes out of the pipe at a speed of 14cm/s.
How long does it take to fill the tank? Give your answer in hours and minutes, correct to the nearest min 
a rectangular when full of water takes 10 min to be emptied through an office in its bottom. how much time does it take to be emptied when half filled with water
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