Amplitude relation with periodic time

  • #1
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Homework Statement


Ql: Which sound wave will have its crests farther apart from each other - a wave with frequency 100 Hz or a wave with frequency 500 Hz?

Homework Equations


Frequency= 1/ periodic time

The Attempt at a Solution


I did it like that:
I just found the periodic time for each wave, substituting in the previous relation. and I ended up with :
first wave (500Hz) => 0.002 s
second wave (100 Hz) => 0.01 s

which means that the second has larger wavelength making it ~slower (if we can say), and the first one with a larger wavelength.
however, I still can't reach the crest (amplitude) using the given information!

is there any relation between the periodic time and the amplitude?
or the wavelength and the amplitude?

thanks in advance
 

Answers and Replies

  • #2
DrClaude
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I read the question's use of "farther apart" as relating to distance. You would then need an equation that involves some sort of length.
 
  • #3
berkeman
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is there any relation between the periodic time and the amplitude?
or the wavelength and the amplitude?
You ask about amplitude there in what I quoted and in your thread title, but it is not in the problem statement as far as I can see. Is there more to the problem statement?
 
  • #4
CWatters
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Look in your text book for the equation that relates a waves velocity, frequency and wavelength.
 

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