What is the Pressure Calculation for a Horizontal Pipe with Vertical Tubes?

[rechitzy]

Homework Statement

Water (η = 1.00E-3 Pa*s) is flowing through a horizontal pipe with a volume flow rate of 0.0121 m3/s. As the figure below shows, there are two vertical tubes that project from the pipe. Assume that H = 0.0424 m and L = 0.679 m.

Homework Equations

No idea how to approach this question and i need to know before 11:00 to get extra credit please need a hint

The Attempt at a Solution

 

[rechitzy]

I was researching and i believe i have to use this formula but how to calculate the pressure??

Q=πR4∆p/(8ηL)