A flute plays a note with a frequency of 266 Hz What is the speed of sound if the wavelength is 1 point 3 m ?

Use the wave-speed formula: speed = frequency × wavelength. Substituting the values gives 266 Hz × 1.3 m = 345.8 m/s, which rounds to 346 m/s. So the correct choice is A, 346 m/s.

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