Question: An unknown liquid flows smoothly through a 6 . 0 - mmmm - diameter horizontal tube where the pressure gradient is 4 5 0 Pa

An unknown liquid flows smoothly through a 6.0-mmmm-diameter horizontal tube where the pressure gradient is 450 Pa/mPa/m. Then the tube diameter gradually shrinks to 3.0 mmmm.
Part A
What is the pressure gradient in this narrower portion of the tube?
Express your answer in pascals per meter.

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