Bernoulli's Equation and venturi meter

[keemosabi]

Homework Statement

A venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0600 m2. The gas has a density of ρ = 1.60 kg/m3. The Venturi meter has a cross-sectional area of A1 = 0.0300 m2 and has been substituted for a section of the larger pipe. The pressure difference between the two sections is P2 - P1 = 150 Pa.

(a) Find the speed v2 of the gas in the larger original pipe.
m/s
(b) Find the volume flow rate Q of the gas.
m3/s

Homework Equations

The Attempt at a Solution

 

[tiny-tim]

Hi keemosabi!

Show us what you've tried, and where you're stuck, and then we'll know how to help.

 

[keemosabi]

Hi keemosabi!

Show us what you've tried, and where you're stuck, and then we'll know how to help.

I'm pretty sure I need the equations

and av = av, but I don't know where to go from there.

 

[keemosabi]

Anyone? :(

Nevermind, I got it. :)