Your boss gives you a sample of ‘‘gunk’’ and asks you to measure its viscosity. You do this in a cup-and-bob viscometer that has an outer (cup) diameter of 2 in., an inner (bob) diameter of 1.75 in.,...

Your boss gives you a sample of ‘‘gunk’’ and asks you to measure its viscosity. You do this in a cup-and-bob viscometer that has an outer (cup) diameter of 2 in., an inner (bob) diameter of 1.75 in., and a bob length of 4 in. You run the viscometer at three speeds, and record the following data:

(a) How would you classify the viscous properties of this material?

(b) Calculate the viscosity of the sample in cP.

(c) What viscosity model best represents these data, and what are the values of the viscous properties (i.e., the model parameters) for the model?