Alarge mass is supported by a piston of diameter 퐷=4푖푛.and length 퐿=4푖푛.the piston sits in a cylinder closed at the bottom, and the gap 푎=0.001푖푛.between the cylinder wall and piston is filled with sae oil at 68∘퐹. the piston slowly sinks due to the mass, and oil is forced out at a rate of 0.1 gpm. what is the mass (slugs)?

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

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

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.