The speed of a wave is the frequency multiplied by the wavelength. If a 200Hz sound travels through the following materials, use the given table of speeds of sound to determine the wavelength of sound: Air (20C) Steel Human Tissue Material Speed (m/s) Air (20C) 344 Helium 1,006 Water 1,440 Human tissue 1,540 Aluminum 5,100 Granite 4,000 Iron and steel 5,200
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
The speed of a wave is the frequency multiplied by the wavelength. If a 200Hz sound travels through the following materials, use the given table of speeds of sound to determine the wavelength of sound:
- Air (20C)
- Steel
- Human Tissue
Material Speed (m/s)
Air (20C) 344
Helium 1,006
Water 1,440
Human tissue 1,540
Aluminum 5,100
Granite 4,000
Iron and steel 5,200
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