How do you find frequency given this wave graph?

AI Thread Summary
To find the frequency from a wave graph showing displacement over time, one must identify the period of the wave, which is the time for one complete cycle. In this case, the period is determined to be 0.05 seconds, leading to a frequency of 20 Hz, calculated as the inverse of the period. While the question initially inquires about wavelength, it is noted that wavelength cannot be determined without the wave speed, which is not provided. Therefore, the focus remains on calculating frequency based on the observed period. Understanding the relationship between period and frequency is essential for interpreting wave graphs effectively.
cmkc109
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Homework Statement



How do you find wavelength given this wave graph? [ignore my title please]

Homework Equations



c= (wavelength)(frequency)

The Attempt at a Solution



I always see displacement (y) vs distance (x) graph, but this one is displacement (x) vs t

I'm kinda confused how you solve for the wavelength

can someone help me with interpreting this graph?

I know the question is asking for frequency, but is it possible to figure out the wavelength given this graph?
 

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cmkc109 said:

Homework Statement



How do you find wavelength given this wave graph? [ignore my title please]

Homework Equations



c= (wavelength)(frequency)

The Attempt at a Solution



I always see displacement (y) vs distance (x) graph, but this one is displacement (x) vs t

I'm kinda confused how you solve for the wavelength

can someone help me with interpreting this graph?

I know the question is asking for frequency, but is it possible to figure out the wavelength given this graph?

The problem asks the frequency. You get the wavelength if you know the speed of the wave in that medium, but it is not given.

ehild
 
ehild said:
The problem asks the frequency. You get the wavelength if you know the speed of the wave in that medium, but it is not given.

ehild



ok thanks
 
cmkc109 said:

Homework Statement



How do you find wavelength given this wave graph? [ignore my title please]


Homework Equations



c= (wavelength)(frequency)


The Attempt at a Solution



I always see displacement (y) vs distance (x) graph, but this one is displacement (x) vs t

I'm kinda confused how you solve for the wavelength

can someone help me with interpreting this graph?

I know the question is asking for frequency, but is it possible to figure out the wavelength given this graph?
attachment.php?attachmentid=58092&d=1366605292.png

You can't solve for wavelength.

The particle moves back and forth periodically. What's the period of that motion?
 
I got the answer.
1 wave is 0.05 sec

frequency is the the number of cycles per sec
so here 1 cycle / 0.05 sec
so 1 sec/ 0.05 = 20
 
cmkc109 said:
I got the answer.
1 wave is 0.05 sec

frequency is the the number of cycles per sec
so here 1 cycle / 0.05 sec
so 1 sec/ 0.05 = 20

What units ?
 
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