• Support PF! Buy your school textbooks, materials and every day products Here!

Doppler Effect frequency

  • Thread starter lha08
  • Start date
  • #1
164
0

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:

Answers and Replies

  • #2
96
0
What are the situations? With the information given we can't do anything.
 
  • #3
164
0
What are the situations? With the information given we can't do anything.
my bad, no wonder no one was replying :P
 
  • #4
Doc Al
Mentor
44,882
1,129
Since the source is stationary, the wavelength doesn't change.
 

Related Threads for: Doppler Effect frequency

  • Last Post
Replies
1
Views
709
  • Last Post
Replies
10
Views
4K
  • Last Post
Replies
9
Views
470
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
9K
  • Last Post
Replies
1
Views
971
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
1
Views
686
Top