Newton’s law of viscosity states thata.  the shear stress applied to the fluid is directly proportional to the velocity gradient du/dyb.the shear stress applied to the fluid is inversely proportional to the velocity gradient du/dyc.    the shear stress applied to the fluid is directly proportional to the  specific weight of the fluidd.the shear stress applied to the fluid is directly proportional to the  specific weight of the fluid

What type of fluid behavior is observed when there are deviations from the linear plot between viscosity and shear rate?

Fluid is a substance that:a. flows.b.has the same shear at a point regardless of its motionc.always expands until it fills any containerd.cannot remain at rest under action of any shear forcee.cannot be subjected to shear forces

Viscosity is the resistance to flow.Group of answer choicesTrueFalse

Choose the correct answer (A to D). For a pharmaceutical gelQuestion 7Answera.Above a given shear rate, a pharmaceutical gel behaves as a Newtonian fluidb.Viscosity is independent on temperaturec.All of the answers are correctd.As the shear rate is increases the gel viscosity increases.

In a fluid the velocity measured at a distance of 75mm from the boundary is1.125m/s. the fluid has absolute viscosity 0.05 Pa s and relative density 0.93. What is the velocity gradient and shear stress at the boundary assuming a linear velocity distribution? Calculate its kinematic viscosity,