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## Homework Statement

A container is filled with liquid, density d. The depth of the liquid is h. A narrow, horizontal, tube at the bottom of the container is letting the liquid flow out at a speed v.

The height of the liquid is kept constant.

What is the velocity of the liquid flowing out of the tube?

## Homework Equations

Bernoulli's equation:

p + (1/2)dv^2 + dgh = constant

## The Attempt at a Solution

I really don't know how to do this! I know the answer is (2gh)^(1/2), but i don't know why that is, as my textbook has no examples. Could someone please explain how to do these kinds of problems?