An 80.0-m-long brass rod is struck at one end. A person at the other end hears two sounds as a result of two longitudinal waves, one traveling in the metal rod and the other traveling in the air. What is the time interval between the two sounds? The speed of sound in air is 344 m/s.
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The speed of longitudinal waves in brass is much higher than in air, and so the sound that travels through the metal arrives first. The time difference is
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