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In laminar Poiseuille flow, how does tube radius affect flow rate?

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  1. Directly with radius
  2. With radius squared
  3. With radius to the fourth power

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References

  1. OpenStax University Physics Volume 1, Viscosity and Turbulence openstax.org/books/university-physics-volume-1/pages/14-7-viscosity-and-turbulence Checked 2026-10-12.

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