A steel tube of length 1.00 m is struck at one end person with
Question:

A steel tube of length 1.00 m is struck at one end person with his ear close to the other end hears the sound of the blow twice, one travelling through the body of the tube and the other through the air in the tube. Find the time gap between the two hearings. Use the table in the text for speeds of sound in various substances.

Solution:

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