Doppler Effect Submarine Problem

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Homework Help Overview

The discussion revolves around a Doppler Effect problem involving two submarines moving toward each other while emitting and reflecting sonar waves. The original poster presents a scenario where the first submarine emits a sonar wave at a frequency of 1400 Hz, and the second submarine is moving at a speed of 9.00 m/s. Participants are analyzing the observed frequencies of the sonar waves as they interact, questioning the calculations and assumptions made regarding the Doppler effect in this context.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the application of the Doppler equations to determine the observed frequencies at each submarine. There are questions about the correctness of the calculated frequencies and the relevance of the relative velocities used in the equations. Some participants express confusion over the impact of the moving sources on the observed frequencies.

Discussion Status

The discussion is ongoing, with various participants providing insights and corrections regarding the calculations. There is a notable lack of consensus on the correct frequencies observed by each submarine, and multiple interpretations of the Doppler effect are being explored. Some participants have offered guidance on selecting appropriate reference frames for the calculations.

Contextual Notes

Participants are working under the constraints of a homework assignment, with some expressing urgency for a definitive answer due to its relevance to a graded exam. There are also indications of confusion regarding the application of the Doppler effect in scenarios involving moving sources and observers.

  • #31
mjsd said:
But I firmly believe that I did no wrong when I got 1431 Hz for the answer although I didn't show my actually workings here.
Perhaps I've misinterpreted what you've been saying. Only one way to find out: Show your work and let's take a look. Up to you.
 

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