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 | |