Consider a large underground water-holding tank, which supplies water to my neighborhood. In the illustration below we show the sketch of one portion of this neighborhood water "system," which is currently non-operational It seems that the supply pipe is partially plugged with sand. You could consider this plugged-sand as a packed bed. We are about to pay a $1000. to a vendor to come and unplug this very long pipe. The tank currently holds approximately 2.[m] of water (h-2.[m]). At the end of the pipe we can collect approximately 1.9 [Liters/min] of water flow, which is much less than what we expect under normal circumstances. Packed Bed p P. atm urewas Heo.com atm a) Calculate how long ( [m]) the plug of sand we could expect to find in data is available: pipe if the following Data: Dtank =8. [m] =2. [m] -0.02 [m] 1. [mm] = 1.9 [liter/min] 1000. [m Diameter of the tank h Current level of the water in the tank Dpipe Pipe diameter Average send particle diameter Water flow rate through plugged pipe Approximate length of the pipe Estimated voidage of the packed bed of sand dp F L 0.4 dy Hint: Typically, I would suggest that one could ignore friction losses in the pipe. This time I am suggesting that you take into account friction losses in both: pipe and in the plug of sand, which you can consider to be a packed bed.