Engineering, 05.05.2020 04:09, mmoore36
Vehicles begin to arrive at a parking lot after the start of a major sporting event. They are arriving at a deterministic but time-varying rate:
λ(t) = 3.3 − 0.1t
[λ(t) is in veh/min and t is in minutes]. A single parking lot attendant processes vehicles (assigns spaces and collects fees) at a deterministic rate at the station. A queue exceeding four vehicles will back up onto a congested street, and is to be avoided.
How many vehicles per minute must the attendant process to ensure that the queue does not exceed four vehicles?
Answers: 1
Engineering, 03.07.2019 14:10, bryneosburn
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
Engineering, 04.07.2019 18:10, tjeffers90028
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:20, safiyabrowne7594
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Vehicles begin to arrive at a parking lot after the start of a major sporting event. They are arrivi...
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