homework help > physics > physics q&a board > topic: bernoulli's equation (water exiting crack in dam) [li...

Q BgQuestion:

      
Pupil
Karma Points: 58
Respect (100%):
posted by  Fossiltalk on 7/21/2009 6:36:30 PM  |  status: Closed  |  Earned Karma: 58

Bernoulli's Equation (Water exiting crack in dam) [Lifesaver]

Course Textbook Chapter Problem Needs by
General Physics N/A N/A N/A N/A
Question Details:
I got an answer, I am looking for confirmation that my answer (in bold) is correct.  Please provide short explanation with answer, whether mine is correct or not.

A small crack occurs at the base of a 15.0 m high dam. The effective crack area through which water leaves is 1.30 x 10^-3 m^2. Ignoring viscous losses, what is the speed of water flowing through the crack?

a. 14.0 m/s
b. 19.4 m/s
c. 36.6 m/s
d. 17.1 m/s
e. 24.2 m/s

Thanks, will rate lifesaver for best explanation!
Aaron Michael (David) Simmons

AAnswers:

Answer Question Ask for clarification
Sage
Karma Points: 4,242
posted by MasterChef on 7/21/2009 7:26:34 PM  |  status: Live
Asker's Rating: Lifesaver   
Response Details:
The velocity (found by Torricelli's Thm) is the same as velocity an object would acquire falling a height h:

  so I AGREE with your answer
Please don't forget to Rate!
Answer Question Ask for clarificarion
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today » How Cramster is different from tutoring »

Need Help In

Useful Links