A simple and accurate viscometer can be made from a length of capillary tubing. If the flow rate and pressure drop are measured, and the tube geometry is known, the viscosity of a Newtonian liquid can be computed from Eq. 8.13c. A test of a certain liquid in a capillary viscometer gave the following data:

Determine the viscosity of the liquid.

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Flow rate: Tube diameter: 880 mm/s 0.50 mm Tube length: Pressure drop: 1 m 1.0 MPal