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Type: Open-Ended
Category: Waves and Sound
Level: Grade 11
Tags: frequency
Author: kieke
Created: 11 years ago

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Waves and Sound Question

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Grade 11 Waves and Sound

At a railroad crossing, watching a train go by, you estimate the length of each railroad car to be 10m. You start to get antsy as you realize, that in 60 seconds, you've counted only 47 cars so far, and there is train as far as the eye can see.

a. What is the frequency of the train cars?

b. What is the train's speed?