# Physics 2: Waves and Sound

A F note has a wavelength of 98.8 cm. Calculate its frequency.

If you are standing 100 m away from the starter at a track meet, how long will it take you to hear the sound from the gun after it is shot?

A person is standing on the south side of a canyon and shouts. She hears the echo in 0.44 seconds. Assuming the sound bounced off the other side of the canyon and came back, how wide is the canyon?

What happens to the wavelength and the frequency of a note as you go up one octave?

A concert A has a frequency of 440 hertz. What is its wavelength, and what is the frequency and wavelength of an A one octave higher?

What is the resonant frequency of sound when you blow across an empty soda bottle that is 15 cm tall?

The soda bottle in the above question is 1/3 full. What is the resonant frequency of sound produced when you blow across it?

An organ pipe is 78 cm long. What is the resonance frequency of sound it produced if it is: A. Open? B. Closed?