subject
Engineering, 04.05.2021 18:50 Claude7617

Suppose that pedestrians individually (i. e., no groups) arrive to a group of doors according to a deterministic rate of 40 people per minute for the first two minutes; a deterministic rate of 60 people per minute for the next six minutes; and a deterministic rate of 20 people per minute for the following five minutes. After that, there are no arrivals. You may treat this as a D/D/1 queuing system, no matter how many doors are open. a. If only one door is open, what is the queue clearance time?
b. If only one door is open, what is the average delay?
c. What is the minimum number of doors that should be open so that there is no queue at 15 minutes?

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
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
Answers: 3
question
Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
question
Engineering, 04.07.2019 18:10
Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when
Answers: 1
question
Engineering, 04.07.2019 18:10
Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs
Answers: 2
You know the right answer?
Suppose that pedestrians individually (i. e., no groups) arrive to a group of doors according to a d...
Questions
question
Mathematics, 10.09.2021 02:10
question
Mathematics, 10.09.2021 02:10
question
Mathematics, 10.09.2021 02:10
question
Chemistry, 10.09.2021 02:10
question
English, 10.09.2021 02:10
question
Mathematics, 10.09.2021 02:10
question
Mathematics, 10.09.2021 02:10
question
Biology, 10.09.2021 02:10
Questions on the website: 13722362