Air enters the 1 m² inlet of an aircraft engine at 100 kpa and 20° c with a velocity of 180 m/s. determine: a) the volumetric flow rate in m^3/s b) the mass flow rate kg/s assume air to be an ideal gas

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.