Viscosity question question 1 to 4 Can you choose the answer

Viscosity question.

question 1 to 4.

Can you choose the answer for me?

Thanks.

Question 1 of 9 1.0 Points In a Newtonian fluid, A. Shear stress is linearly proportional to shear rate B. shear stress is linearly proportional to temperature C. shear stress is linearly proportional to density D. shear stress is linearly proportional to color Question 2 of 9 1.0 Points The relationship between temperature and absolute viscosity of fluids is A. linear B. exponential C. cubic D. quadratic Question 3 of 9 1.0 Points The Cannon Fenske Viscometer is used to measure A. viscosity as a function of flow rate

Solution

1. A) In a Newtonian fluid, shear stress is proportional to shear rate. Tau = u*(dV/dy)...where Tau is the shear stress, u = dynamic viscosity which acts like a proportionality constant and dV/dy is the shear rate.

2. B) The relationship between temperature and absolute viscosity of fluids is exponential. The viscosity drops exponentially with increasing temperature.

3. D) The Cannon Fenske Viscometer is used to measure viscosity.

4. Applied torque. The torque required to turn an object in a fluid is a function of the viscosity of that fluid. They measure the torque required to rotate a disk or bob in a fluid at a known speed.