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.

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery