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## Homework Statement

Water moves through a constricted pipe in steady, ideal flow. At one point, where the pressure is 2.50*10^4 Pa, the diameter is 8.0 cm. At another point .5 Meters higher, the pressure is equal to 1.50*10^4 Pa and the diameter is 4.0cm. Find the speed of flow at the lower and the upper sections and also find the volume flow rate through the pipe

## Homework Equations

I dont really care about the volume flow rate at this point, am really interested in how to find the speed of the flow at one of the sections, say at the lower section where the altitude would equal zero.

P1+(Rho)(g)(y) + 1/2(rho)(V)^2 = constant

## The Attempt at a Solution

Insert pressure at lower point for P1

Zero height eliminates rho g y

Insert density of water for rho

Leave V as V, since that is what we are solving for

Dont know what to insert for constant.

At this point, I am at a loss.....constant is a variable? Does that give two variables and how then solve?