1. Calculate the Reynolds numbers for a 1.5 in. inside diameter pipe carrying water at a flow rate of 0 to 5 gpm. Assume a temperature of 25°C. 2. The viscosity of 30 wt engine oil at 100°C is 0.0924...

1. Calculate the Reynolds numbers for a 1.5 in. inside diameter pipe carrying water at a flow rate of 0 to 5 gpm. Assume a temperature of 25°C.

2. The viscosity of 30 wt engine oil at 100°C is 0.0924 poise. What is the viscous (shear) force needed to slide an 8 cm diameter, 8 cm long piston through a cylinder on a 2 μm thick oil film with a speed of 8 m/s?