At 8:00 A. M, there are 10 vehicles in a queue at a toll booth and vehicles are arriving at a rate of A0) -69-0.2t Beginning at 8 A. M. vehicles are being serviced at a rate ofμ 2.1 +0.3t A)and μ(t) are in vehicles per minute and t is in minutes after 8:00 A. M.]. Assuming D/D/1 queuing, what is the maximum queue length, and what would the total delay be from 8:00 A. M. until the queue clears? Draw D/D/1 queuing and queue length diagrams and label accordingly.

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.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater