For this assignment, you will create a weighted scoring model to determine grades for a course based on the following information: final grades are based on - three exams worth 20%, 15%, and 25%, respectively homework is worth 15% a group project is worth 25% enter scores for three students - assume student 1 earns 100% (or 100) on every item. assume student 2 earns 70% on each of the exams, 80% on the homework, and 95% on the group project. assume student 3 earns 90% on exam 1, 80% on exam 2, 75% on exam 3, 80% on the homework, and 70% on the group project. you can use the weighted scoring model template wtd_decision_matrix. xlsx provided on the companion website for this text, create your own spreadsheet, or make the matrix by hand.

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)

Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.

Ashielded metal arc-welding operation is accomplished in a work cell by a fitter and a welder. the fitter takes 5.5 min to load components into the welding fixture at the beginning of the work cycle, and 1.5 min to unload the completed weldment at the end of the cycle. the total ength of the weld seams 1200 mm, and the travel speed used by the welder averages 300 mm/min. every 600 mm of seam length, the welding stick must be changed, which takes 0.8 min. while the fitter is working, the welder is idle (resting): and while the welder is working the fitter is idle. (a) determine the average arc-on time as a fraction of the work cycle time. (b) how much improvement in arc-on time would result if the welder used flux-cored arc welding (manually operated), given that the spool of weld wire must be changed every 10 weldments, and it takes the welder 5.0 min to accomplish the change? (c) what are the production rates for these two cases (weldments completed per hour)? attach your work and solutions.