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Can humans hear ultrasound? Give some examples of applications of ultrasound. Why does the music coming from a band marching in a spread-out formation on a football field sometimes sound discordant?
Does doubling the decibels of a sound intensity level double the intensity? Explain. Why is lightning seen before thunder is heard? Under what circumstances would sound have
How is the wavelength of sound affected when (a) a sound source moves toward a stationary observer, and (b) the observer moves away from a stationary sound source? What is t
What determines the pitch or frequency of a string on a violin or a guitar? How does a musician get a variety of notes from one string? Explain why the crack of a whip is a
An electromagnetic wave has a wavelength of 6.00 x 10-6 m. In what region of the electromagnetic spectrum is this radiation? How far does light travel in one year? [This dis
Compute the wavelength of the radio waves from (a) an AM station operating at a frequency of 650 kHz, and (b) an FM station with a frequency of 95.1 MHz. What is the frequen
A sound wave has a frequency of 2000 Hz. What is the distance between crests or compressions of the wave? (Take the speed of sound to be 344 m/s.) Compute the wavelength of
A periodic wave has a period of 0.40 s. What is the wave frequency? What is the period of the wave motion for a wave with a frequency of 0.50 kHz? Compute the wavelength in
In the figure, determine (draw) the wavelengths of the first three characteristic frequencies for the pipes. That is, the first three wavelength segments that will "fit" int
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