8. What is a critical estimation you need to do when you are waiting at an intersection to make a left hand turn? A. O Speed estimation of on coming vehicle
B. O Distance of other road users from your vehicle
C. Whether the pedestrian will be crossing the intersection

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.