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Problem 2: The door suddenly opened when an airplane with an internal pressure of 1 atmosphere was flying at a speed of 1000 km/h. How much does the internal pressure drop? However, the density of air is 1.29Kg/mA3 and the pressure of 1 atmosphere is 10"5 Pa. hint) If you think of it as an airplane standard, it is equivalent to a situation in which the wind at a speed of 1000 km/h is blowing through the airplane window