Bernoulli's fluid flow in a tube [desperate]

[erinec]

It is 2 days before final exam and I don't even know how to solve this. I am so screwed.

Homework Statement

http://img201.imageshack.us/img201/9822/picture1ap8.png
(The answers written above are supposed to be the correct answers.)

Homework Equations

P + (1/2)pv² + pgh = constant

The Attempt at a Solution

I tried every possible way for hours and hours but none of the answers match the correct answers shown above. I would be extremely thankful for your help.

 

[minger]

This problem cannot be solved without the diameters of the pipe, or the exit pressure. To be honest, I'm not sure what you could have tried to get an answer.

IF you have the diameters. You use the conservation of mass to obtain the final velocity, assuming the fluid is incompressible, so mass flow is constant. From there, you have all but one (exit pressure) term in Bernoulli's.

 

[thomate1]

Dear student,

I understand that you are feeling overwhelmed and stressed about the material on Bernoulli's fluid flow in a tube. It is normal to feel this way when faced with a difficult concept or problem, especially with a looming deadline like a final exam.

First of all, take a deep breath and try to relax. Panicking will not help you solve the problem. Instead, try to break it down into smaller parts and focus on understanding the underlying principles rather than just getting the correct answer.

One approach you could take is to review the equations and concepts related to Bernoulli's principle. Make sure you understand how pressure, velocity, and height are related in a fluid flow system. Then, carefully read and analyze the given problem, making note of any relevant information or given values.

Next, try to apply the Bernoulli's equation to the problem, keeping in mind that the total energy of the fluid remains constant throughout the tube. Remember to consider the change in pressure, velocity, and height at each point in the tube.

If you are still having trouble, don't hesitate to seek help from your classmates, professor, or a tutor. Sometimes, discussing the problem with others can help you gain a new perspective and find a solution.

Finally, remember that even if you don't get the correct answer, it is important to show your work and explain your thought process. This will demonstrate your understanding of the concept and can still earn you partial credit.

Don't give up, keep trying and I am sure you will be able to solve the problem successfully. Good luck on your final exam!