A train's whistle produces a sound known to have a frequency of exactly 500 Hz. Standing still with a radar gun directly in the path of an oncoming train movingtoward you, you measure its speed to be 24.8 m/s. Your keen ear perceives a frequency of 538.5 Hz regarding its blowing whistle as it steams towards you. Being thescientist that you are, you proceed to step off of the tracks and use your data to determine the air temperature outside. Measured in degrees Celsius, what do youconclude it to be?

Original frequency (f) = 500 Hzobserved frequency (fo) = 538.5 Hz Speed of train (v) = 24.8 m/s

Answered: A train's whistle produces a sound…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Two sound waves arrive to an observer, the first is loud at 2 W/m ^2 and the second one is quieter at 100 mW/m^2 ; how many dB louder is the first one compared to the second one?
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