Cost and benefit, environmental effects, ethical or legal implications, health and safety considerations, and sustainability are the five main categories of which of the following options? A. Course requirements for engineering degrees B. The major items for engineers to consider during the design process
C. The main constraints for engineers in modern times
D. Concerns flagged by the U. S. Green Building Council

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.