Physics

posted by jesse

You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work on water resources project. The department will be overseeing the construction of a dam to create a large fresh water lake that will be approximately 18 meters deep. A horizontal pipe 1.2 meters long and 4 cm in diameter will pass through the dam at a depth of 7 meters to allow for release of the water in emergencies and for sampling. In normal situations, a plug will secure the pipe opening.



d) If the plug were to be removed, how much water would flow out in 3 hours?
ΔVOL = m3

* Physics - drwls, Friday, April 30, 2010 at 2:09am

a) A*[Po + (rho) g H]
Po is atmospheric pressure
rho is the mass density of water, 1000 kg/m^3
H is the water height above the hole, 7 m
A is the pipe inner area, pi*D^2/4, in square meters

b) A* Po

c) (rho) g H

d) A*(10,800 s)*V
where V is the speed of wather leaving the pipe.
Use Bernoulli's principle to get V.



Thanks for your help but i really cant understand what to plug in bernoulli's equation. i know the equation which is P1+.5(p)v1^2=P2+.5(p)v2^2
this problem was very hard, even the student tutors at my college were unable to figure out D. so help me with it if you can since you have got me almost to the end as i got a b and c.

  1. Damon

    (1/2) rho v^2 = rho g H
    (1/2) v^2 = 9.8 * 7

  2. jesse

    alrite love you man.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Project Management

    You’ve been assigned by your boss to hire a project manager to manage a dam construction project. Write an advertisement for Project Manager’s Illustrated to attract qualified candidates. In your ad, be specific as to the skills, …
  2. Business Management and Leadership

    You work in the Human Resources department of your organization. You have been charged with recruiting a manager for a department within the Services division. The Vice-President of the Services division stresses to you that "This …
  3. social studies

    I have to create a peanut butter business using three capitol resources, three human resources, and three natural resources. I do not understand how to do this I now know what the resources are, but I do not know when they say create …
  4. Physics

    You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work on water resources project. The department will be overseeing the construction of a dam to create a large …
  5. Physics

    You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work on water resources project. The department will be overseeing the construction of a dam to create a large …
  6. geography

    How are natural resources distributed throughout the world?
  7. Principles of Business

    Approximately how many people work in the: Finance Department?
  8. a

    Susan Rojas is applying for a position in the marketing department of a local corporation. Although Greg Ellis is the director of this department, she has been instructed to send her resume and other documents to Jeff Cohen, manager …
  9. Math

    Randi takes the stairs at work whenever possible instead of the elevator. She must climb up 51 steps from her office to get to the accounting department. The human resources department is 24 steps below her office. How many steps are …
  10. Math

    Randi takes the stairs at work whenever possible instead of the elevator. She must climb up 51 steps from her office to get to the accounting department. The human resources department is 34 steps below her office. How many steps are …

More Similar Questions