Water drains at a constant rate through a saturated soil column with a diameter of 1 ft and a height of 2.5 ft. The hydraulic head is maintained at 4.7 ft at the top of the column and 1.4 ft at the bottom. After a period of 1 hr, 0.06 ft3 of water has drained through the column. What is most nearly the hydraulic conductivity (ft/s) of the soil? a. 9.1 times 10^-6 ft/s
b. 4.6 times 10^6 ft/s
c. 3.5 times 10^-6 ft/s
d. 7.1 times 10^-6 ft/s

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.