Two miles of gas are confined in a piston cylinder. initially, T=300k, p=1 bar. Gas compressed to 5bar. Cp=(7/2)R. Find dU if the gas follow van set waals. a=5.0*10^6 bar-cm^6/mol^2. b=30 cm^3/mol. Also consider dU=Tds-Pdv. dU=(dU/dv)Tdv+(dU/dT)vdT. dU=(dU/ds)vds+(dU/dv)sdv

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)