alanndriawilliams alanndriawilliams

09-04-2019
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in the nineteenth century, people put their ears to a railroad track to get an early warning of an approaching train. Why did this work?

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adriannagrace2024 adriannagrace2024

09-04-2019

The vibrations and sound waves from the train would travel up the railroad tracks ahead of the train. When a person put their ear on the track, it would receve the signals from the vibrations and sound waves.

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