subject
Engineering, 22.10.2019 20:00 sebascarvallo2003

Six flags great america is constructing a new roller coaster. the project is scheduled to begin in the winter and they hope to have it ready for their busy summer season. the roller coaster planner has identified the following activities and their estimated times. immediate activity predecessor weeks a — 3 b — 1 c — 2 d a, b, c 4 e d 5 f a 3 g d, f 6 h e 4 (a) draw the project network and compute the earliest start, latest start, earliest finish, and latest finish time for each activity. (b) how long will it take to complete the roller coaster? (c) what is the critical path? (d) compute the slack for each of the non-critical activities. (e) if the planner were to add extra resources to activity f so that it takes 2 weeks instead of 3 weeks, how long would it take to complete the roller coaster? homework 8 ©2015 david czerwinski 3 bus 190 (f) if the planner were to add extra resources to activity d so that it takes 3 weeks instead of 4 weeks, how long would it take to complete the roller coaster? (g) a component needed to complete activity g has been damaged and a replacement has been ordered. because of this, activity g will take four weeks longer than orig

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
question
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
question
Engineering, 04.07.2019 18:20
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
question
Engineering, 04.07.2019 18:20
A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?
Answers: 3
You know the right answer?
Six flags great america is constructing a new roller coaster. the project is scheduled to begin in t...
Questions
question
Mathematics, 22.09.2019 21:10
question
Mathematics, 22.09.2019 21:10
question
Mathematics, 22.09.2019 21:10
Questions on the website: 13722362