Answered

IDNLearn.com is committed to providing high-quality answers to your questions. Join our community to access reliable and comprehensive responses to your questions from experienced professionals.

Kevin is standing outside a railway station. He can know whether a train is approaching the station or departing from the sound it makes. Which principle of sound waves is he using?

Sagot :

Kittymaniacidn
The Doppler Effect. When a train is approaching, the sound waves in front of it are "squished" and the sound of a train whistle will seem to be a higher pitch than the actual pitch of the whistle. If the train is departing, the sound waves will appear to be "stretched" and the sound will be lower than the actual pitch of the whistle. As the train passes by, the sound will shift from the higher pitch to the lower pitch, passing its true sound on the way.

Hope this helps! :)
We appreciate your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. Discover the answers you need at IDNLearn.com. Thank you for visiting, and we hope to see you again for more solutions.