

MCQOPTIONS
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1. |
A jet plane files through air with a velocity of 2 Mach. While the velocity of sound is 332 m/s the air speed of the plane is: |
A. | 66.4 km/s |
B. | 166 m/s |
C. | 664 m/s |
D. | 332 m/s |
Answer» D. 332 m/s | |