A jet plane flies at an altitude of 40 000 ft where the air


1. Find the speed of sound in air at 15 lbf/in.2 at the two temperatures of 32 F and 90 F. Find the answer for carbon dioxide and argon gases.

2. A jet plane flies at an altitude of 40 000 ft where the air is at -40 F, 6.5 psia, with a velocity of 625 mi/h. Find the Mach number and the stagnation temperature on the nose.

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Civil Engineering: A jet plane flies at an altitude of 40 000 ft where the air
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