A Pitot-static probe is used to measure the speed of an aircraft flying at4000 m. Assume that the density of the atmosphere at that height is 0.82 kg/m3. Ifthe differential pressure reading is 3.5 kPa, determine the speed of the aircraft.

Consider a 1.2 meter high and 2 meter wide glass window whose thickness is 6 mm and thermal conductivity is 0.78 w/m °c. the room temperature is maintained at 24 °c, while the outdoor temperature is -5 °c. the convective heat transfer coefficients on the inner and outer surfaces of the window are 10 w/m2 °c and 25 w/m2 °c respectively. (a) draw the thermal resistance network, etermine the steady rate of heat transfer t e glass window (c) determine the temperature of the inner surface of the window