On a particular day the speed of sound in air is 340 m/s.
Chapter 6, Problem 21(choose chapter or problem)
On a particular day the speed of sound in air is 340 m/s. If aplane flies at a speed of 680 m/s, is its Mach number (a) 1.5,(b) 2.0, (c) 2.5, or (d) 2.7?
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