AP PSYCHOLOGY

Detailed explanation-1: -To find wavelength from frequency, we can use v = f v = f . (1) Identify the knowns. The values for v and f are given. (2) Solve the relationship between speed, frequency and wavelength for .

Detailed explanation-2: -Wavelength also determines how easy it is to find the direction of a sound. You may have heard, for example, that the placement of a subwoofer in a room does not make a big difference for a sound system. As it is often described, “low frequencies” are not directional.

Detailed explanation-3: -As you see, sound frequency is determined by the way in which sound waves oscillate whilst travelling to our ears, meaning that they alternate between compressing and stretching the medium, which in most cases is air. In the same medium, all sound waves travel at the same speed.

Detailed explanation-4: -The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw=f, wherevw is the speed of sound, f is its frequency, and is its wavelength.

Detailed explanation-5: -The wavelengths of sound frequencies audible to the human ear (20 Hz–20 kHz) are thus between approximately 17 m and 17 mm, respectively. Somewhat higher frequencies are used by bats so they can resolve targets smaller than 17 mm. Wavelengths in audible sound are much longer than those in visible light.