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1. |
A jet-propelled aircraft is flying at a speed of 1100 km/hour at t = 20°C, r = 1.4, and R = 287 J/kg K The Mach number at a point on the jet will be nearly |
A. | 0.3 |
B. | 0.5 |
C. | 0.7 |
D. | 0.9 |
Answer» E. | |