The Picture on the Right Represents the Wavefronts of a Supersonic

question 93

Multiple Choice

The picture on the right represents the wavefronts of a supersonic flight. The angle $\theta$ = 40 ^$\circ$ . If the speed of sound is 300 m/s, what is the speed of the plane?

• A) 360 m/s
• B) 330 m/s
• C) 300 m/s
• D) 390 m/s
• E) 470 m/s

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