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Problem: Vehicles arrive at a toll booth with a mean arrival rate of 2 veh/ min (the time between arrivals is exponentially distributed). The toll booth operator processes vehicles (collects tolls) at a uniform deterministic rate of one every 20 seconds. What is the average length of queue, the average time spent in the system, and the average waiting time in the queue?
A 60 MW Rankine steam power cycle in Iceland uses reheat. The system is comprised of a single adiabatic pump, a boiler using geothermal energy, two adiabatic turbine stages and a condenser.
What is difference between premix asphalt carpeting and asphalt concrete pavement?
Calculate the NOD and ThOD of a waste containing 25 mg/L of ammonia-nitrogen (NH3 -N), 50 ing/L of phenol (C6 H5 OH). and 150 mg/L of naphthalene (C10 H8 ). What is the total theoretical oxygen demand of the waste?
Consider the components that are required for an automobile. List 5 components and identify the class of material that is used for each component. What are the critical properties that allow for the function of the material in that application
Determine the minimum distance from the diversion that a road sign should be located informing drivers of the temporary change on the highway. The letter height on the road sign is 5 inches.
A valve is now opened and steam at 1Mpa at 473 K is allowed to enter the cylinder until the volume inside increases to 0.04m^3 . Determine the final temperature of the steam and the amount of mass transfer
What is the actual horizontal distance between the two points? (Assume normal tension is used.)
A concrete (n=0.013) stormwater channel, 6-feet in diameter, has a bed slope of 0.01%. What is the uniform flow in cfs when the pipe is half full
A 1 L beaker contains a material that decays at a first order rate of 0.25/day. How long will it take for the concentration in the container to be reduced to 10 % of its originalvalue?
A stream conveying a flood peak of 50 m3/s (velocity 1.25 m/s and depth 1 m) is divided into 1 km long reaches for solution of the unsteady equations. Determine the largest value of ft for which the solution will be stable.
The water exiting a 2.5 cm diameter nozzle which is atrtached to a 7.6 cm diameter fire hose is discharged at a velocity of 25 m/s. the pressure in the hose is 380 kpa. what is the magnitude and direction of the force of the water n the nozzle, if th..
A 1kg ball is dropped from the top of a cliff and falls with a constant acceleration due to gravity. Assume that effects of air resistance can be ignored.
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