9. In studying the rheological properties of oil using

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9. In studying the rheological properties of oil using the Ubbelohde viscometer, the following experimental data were obtained:
Voltage Ρ⋅10 -2, N / m 2 5.0 10.0 15.0 20.0 25.0 30.0
Flow velocity (1 / τ) ⋅10 2, s -1 0.2 1.0 2.2 3.7 7.3 7.0
Construct a curve in the coordinates 1 / τ = f (P) and determine at what voltage the structure completely collapses.

Additional information

Questions and problems from the manual:
"Laboratory Workshop on Colloid Chemistry" Nekrasov AP, Veretenchenko BA, Kharkov NTU "KhPI", 2004
"Characteristic properties of disperse systems" Nekrasov AP, Kharkov, 1996
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