Physics

posted by .

A PVC pipe that is one meter long is struck and the speed of sound is 345 m/s. What is the fundamental frequency (n=1) of the pipe when:

a.The pipe is open at both ends?
b.The pipe is closed at one end, open at the other?

  • Physics -

    The phenomenon is called a standing longitudinal wave, or a stationary wave.
    The part of the tude Where air does not vibrate is called a node.
    In the case of an open tube, the node is at mid-length of the pipe, and the open ends have maximum amplitude. So the length of the tude is half the wave-length of 2 m. The frequency is therefore 345/2=172.5 Hz.
    For the tude closed at one end, the node is at the closed end, and maximum amplitude at the open end. The length of the tude is 1/4 of the wavelength of 4 m. The frequency is 345/4=86 Hz.

    The following link gives a visual description of the above:
    (Broken Link Removed)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    An organ pipe is open at both ends. It is producing sound at its sixth harmonic, the frequency of which is 257 Hz. The speed of sound is 343 m/s. What is the length of the pipe The open pipe has to be of length lambda/2, and odd number. …
  2. Physics

    A PVC pipe that is one meter long is struck and the speed of sound is 345 m/s. What is the fundamental frequency (n=1) of the pipe when: a. The pipe is open at both ends?
  3. physics

    a pipe of length 1.00 m and open at both ends is lying on the ground at a construction site on a windy day of temperature 20 degrees C. Justin notices that the pipe is resonating and creating a sound of a particular frequency, the …
  4. Physics

    The fundamental of an organ pipe that is closed at one end and open at the other end is 261.6 Hz ( middle C ). The second harmonic of an organ pipe that is open at both ends has the same frequency. What are the lengths of the pipe?
  5. Physics

    A pipe that is open at both ends has a fundamental frequency of 330 Hz when the speed of sound in air is 333 m/s. What is the length of this pipe?
  6. physics

    Suppose that the range of output frequencies is from 47.4 Hz to 14.8 kHz for a pipe organ. Take 343 m/s for the speed of sound. (a) What is the length (in units of m) of the longest pipe open at both ends and producing sound at its …
  7. AP Physics

    Two adjacent natural frequencies of an organ pipe are found to be 900 Hz and 990 Hz. (a) Calculate the fundamental frequency and length of this pipe. other info that I already calculated: -the pipe is open at both ends - length of …
  8. physics sound waves

    A friend in another city tells you that she has two organ pipes of different lengths, one open at both ends, the other open at one end only. In addition, she has determined that the beat frequency caused by the second-lowest frequency …
  9. Physics

    Organ pipe A, with both ends open, has a fundamental frequency of 225 Hz. The third harmonic of organ pipe B, with one end open, has the same frequency as the second harmonic of pipe A. How long are
  10. Physics

    An organ pipe that is open a t both ends has a fundamental frequency of 382 Hz. What is the length of an closed end pipe that has a fundamental frequency exactly one octave higher?

More Similar Questions