Question: 1. A vertical circular stack 30meters high converges uniformly from a diameter of 6.0m at the bottom to 4.5m at the top. Coal gas with

1. A vertical circular stack 30meters high converges uniformly from a diameter of 6.0m at the bottom to 4.5m at the top. Coal gas with a unit weight of 4.75N/m3 enters at the bottom of the stack with a velocity of 3m/sec. the unit weight of gas increase uniformly to 6.5 N/m3 at the top. Compute the mean velocity every 5 meter up the stack.

2.At a summit in 300mm diameter pipeline in which 170 liters per second of water os flowing the elevation above the datum is 9.0 meters and the total head is 4.5m. Compute the absolute pressure in the pipe.

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