A fluid sample is contained between two parallel plates separated by a distance of 2 mm. The area of the plates is 100 cm 2 . The bottom plate is stationary, and the top plate moves at a velocity of 1 cm/s when a force of 315 dynes is applied to it, and at 5 cm/s when a force of 1650 dynes is applied. (a) Is the fluid Newtonian? (b) What is the viscosity in units of Pa · s?