1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding the period of a wave

  1. Jul 16, 2005 #1
    :cry: Let' say you have a wave plotted out on a time scale. Each increment on the line is 675 ms. There are 5 increments between each wavelength. How would I find the frequency so that I can solve for the wave's period using:

    Period = 1/Hz
     
  2. jcsd
  3. Jul 16, 2005 #2

    Galileo

    User Avatar
    Science Advisor
    Homework Helper

    What's the problem? Just read the scale. The period is the number of seconds it takes for one wavelength to pass by right? There are 5 increments in one wavelength and 1 increment is 675 ms, so how many seconds for one wavelength?
     
  4. Jul 16, 2005 #3
    The problem is I get 2.96E-4 when I multiply 675*5 then divide 1 by that. I must be doing it wrong
     
  5. Jul 16, 2005 #4

    Galileo

    User Avatar
    Science Advisor
    Homework Helper

    Why divide if you need the period? Also, check your units (dimensions). Period has the dimension of time, so it's measured in seconds.
     
  6. Jul 16, 2005 #5

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    StotleD : What Galileo is telling you is that you can directly read the period off the scale. You do not have to find the frequency and then invert it.
     
  7. Jul 16, 2005 #6
    Period = 1/Hz
     
  8. Jul 16, 2005 #7
    ok, thanks
     
  9. Jul 16, 2005 #8
    Code (Text):

    [FONT=Courier New]
                    x              
                  x   x
                x       x
              x           x           x
                            x       x      
                              x   x
                                x
              |<--------------------->|
               5x(675 ms) = The Period (directly from graph)

               Frequency = 1/(Period) = 1/(5x(675 ms))
               Period = 1/(Frequency) = 1/1/(5x(675 ms)) = (5x(675 ms)) AGAIN!

    [/FONT]
     
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Finding the period of a wave
  1. Periodic Waves (Replies: 3)

  2. Period of a wave (Replies: 2)

  3. Periods of waves (Replies: 1)

Loading...