8. People should not be able to get past
barricades.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

The higher the astm grain-size number, the coarser the grain is. 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.