You are continuing to investigate the sounds that you can make from your roommate's guitar, as described in the opening storyline. You decide to take some data. One particular string is of length 62.1 cm and plays a note with a fundamental frequency of 247 Hz when it is allowed to vibrate freely along its entire length. You now press the string down strongly against a fret that is ocated 20.7 cm from the end of the string by the tuning pins. You pluck the string and use a smartphone app to measure the undamental frequency fret of the sound. Next, you touch your finger lightly at the same position as before, a technique that will result in the string playing what guitarists call a "harmonic." You pluck the string and use the smartphone app to measure the requency fouch of the sound. What are the frequencies fret and frouch (in Hz)?
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.
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