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daisyi
Jul7-04, 06:33 PM
I feel like I am getting so close to this one, but the answer just isn't right!

Water flows down a tube of radius R for a vertical height h into 3 tubes of radius R/3. If the water falls a distance of 1.2m and the velocity in the large tube is 2 m/sec, find the pressure difference between the large and small tubes.

so what I did is use the continuity formula to calculate the velocity of the other tubes, which is 18.

i then used bernouilli's equation to calculate the difference in the pressure, using the information provided and the velocity of 18 which i found above.

i keep coming up with 148240 N/m^2, which is way off of the answer! help!

Doc Al
Jul7-04, 07:41 PM
so what I did is use the continuity formula to calculate the velocity of the other tubes, which is 18.

Redo this calculation. Don't forget that the water flows into three small tubes.

daisyi
Jul7-04, 10:53 PM
thanks a ton, got it