A viscous fluid is confined between parallel disks of radius R which are separated by a distance H. The top (z =H) and bottom (z = 0) disks are rotated at angular velocities wH and w0, respectively. The system is at steady state and the dynamic conditions are such that Stokes' equation is applicable. (a) Show that there is a solution to the 9-rnomentum equation of the form v9= r f(z), and determine f( z). (

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 temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false