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Consider a monochromatic wave on a sting described by an equation Y(x,t) = cos (x -...

Consider a monochromatic wave on a sting described by an equation Y(x,t) = cos (x - t). Assume everything is expressed in SI units.

a) What is speed of sound in the air at normal conditions in m/s?

b) Why is it difficult for a passenger jet to fly faster than sound?

c) What is the wavelength of a sound propagating in air generated by the standard A-tone (440 Hz)?

d) Suppose you stand between two speakers, exactly at the mid-point, 10 m away from each. Each speaker synchronously emits a sound wave with a wavelength of 1 m. What is the minimal distance you should move towards one or the other speaker in order to observe a significant reduction in the volume?

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