A railroad train is traveling at 25.0 m/s in still air. Thefrequency of the note emitted by the locomotive whistle is 400 Hz.What is the wavelength of the sound waves (a) in front of the locomotiveand (b) behind the locomotive? What is the frequency of thesound heard by a stationary listener (c) in front of the locomotive and(d) behindthe locomotive?

A railroad train is traveling at 25.0 m/s in still air. Thefrequency of the note emitted by the locomotive whistle is 400 Hz.What is the wavelength of the sound waves (a) in front of the locomotiveand (b) behind the locomotive? What is the frequency of thesound heard by a stationary listener (c) in front of the locomotive and(d) behindthe locomotive?

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