People used to check if train was coming by putting their ear on the railway. Why do they use this method? What is the difference between just listening from air and the rail?

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Question 18 (2
People used to check if train was coming by putting their ear on the railway. Why do they use this method? What is
the difference between just listening from air and the rail?
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Transcribed Image Text:Question 18 (2 People used to check if train was coming by putting their ear on the railway. Why do they use this method? What is the difference between just listening from air and the rail? Paragraph V B I V + v Lato (Recom... v 19px... ✓ </> LO D D Mt.
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