physics

posted by .

Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles are made to emit sounds that dogs can hear but humans cannot. If the part of a dog whistle that actually produces the high frequency is made of a tube open at both ends, what is the longest possible length for the tube? (Assume a temperature of 20° C.)

I got 0.43 cm for this question, but answer has to be in mm, so i put 4.3mm but its still wrong. I keep trying its giving me wrong. Could someone please help me out. Thank you.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    An object is vibrating.Yourdog can hear it but you cant .What most likely is happeningz?
  2. College Physics

    A young person with normal hearing can hear sounds ranging from 20 Hz to 20 kHz. How many octaves can such a person hear?
  3. Physics

    A whistle you use to call your hunting dog has a frequency of 24 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 23 kHz. To test it, you ask a friend to blow the whistle, …
  4. Physics

    A hypothesis says the upper limit in frequency a human ear can hear can be determined by the diameter of the eardrum, which should have approximately the same diameter as the wavelength at the upper limit. Using the hypothesis what …
  5. Physics

    Physics Question Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 …
  6. College Physics

    Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 Hz. What are the …
  7. physics

    Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles are made to emit sounds that dogs can hear but humans cannot. If the part of a dog whistle that actually …
  8. physics

    1. A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 20 kHz. To test it, you ask a friend to blow the whistle …
  9. physics

    what is the minimum riding speed needed to be able to hear the whistle?
  10. Physics

    Humans can hear sound frequencies ranging from about 20-20000 Hz. What is the shortest wavelength humans can hear (assuming sound travels at 343m/s)

More Similar Questions