A tube with both ends open to the air has a variable length. The air temperature is 22 degrees c. In the same room, there's a string that is tight between an oscillator at one end and a fixed end at the other. The string has a length of 1.5 m, a linear mass density of 0.008 kg/m and a tension of 120 N. The frequency is such that the string is oscillating with the third harmonic. If we want the air in the tube to oscillate with the third harmonic as well and have the same frequency as the string oscillator, what should the length of the tube be?
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.
A tube with both ends open to the air has a variable length. The air temperature is 22 degrees c. In the same room, there's a string that is tight between an oscillator at one end and a fixed end at the other. The string has a length of 1.5 m, a linear mass density of 0.008 kg/m and a tension of 120 N. The frequency is such that the string is oscillating with the third harmonic. If we want the air in the tube to oscillate with the third harmonic as well and have the same frequency as the string oscillator, what should the length of the tube be?
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