How Do You Calculate Wavelength in Doppler Effect Scenarios?

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Homework Help Overview

The discussion revolves around calculating the observed frequency and wavelength in scenarios involving the Doppler effect, specifically with a sound source emitting at 640 Hz and varying observer velocities.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to calculate the wavelength based on the observed frequency but are questioning the validity of their methods. There are inquiries about the specific situations described in the problem and the implications of the source being stationary.

Discussion Status

Some participants are seeking clarification on the problem's details, indicating a lack of sufficient information to proceed. Others have provided insights regarding the constancy of wavelength when the source is stationary, contributing to the exploration of the topic.

Contextual Notes

There appears to be confusion regarding the scenarios presented and the necessary information to solve the problem effectively. Participants are also reflecting on the assumptions made about the source and observer movements.

lha08
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Homework Statement


source emits sound with a characteristic frequency of 640 Hz. Calculate the observed frequency and the wavelength between source and observer in each of the following situations.
a) The observer approaches a stationary source at 57 m/s
b) Both the source and observer move towards each other at 28.5 m/s

Homework Equations


The Attempt at a Solution


I already managed to calculate for the frequency: 747.29 Hz but can anyone explain to me how to find the wavelength because what i thought was that i could simply do 340/747.29 which is wrong..Help please!
 
Last edited:
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What are the situations? With the information given we can't do anything.
 
Shukie said:
What are the situations? With the information given we can't do anything.

my bad, no wonder no one was replying :P
 
Since the source is stationary, the wavelength doesn't change.
 

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