For each of the following questions, sketch the corresponding standing wave pattern and find the values for each question. The effective length of the resonance chamber in an oboe is 0.75 m. The oboe resonates like a tube closed at one end. (a) Find the frequency of the lowest pitch the oboe can play. (b) If a hole is opened (2/5)L from the open end of the oboe, find the frequency of the lowest possible resulting pitch. (c) On a musical instrument, a string of linear mass density 5 g/m, vibrating in its fifth harmonic mode, will produce a wave of frequency 768 Hz when tightened to a tension of 80 N. What is the length of the string?
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.
For each of the following questions, sketch the corresponding standing wave pattern and find the values for each question.
The effective length of the resonance chamber in an oboe is 0.75 m. The oboe resonates like a tube closed at one end.
(a) Find the frequency of the lowest pitch the oboe can play.
(b) If a hole is opened (2/5)L from the open end of the oboe, find the frequency of the lowest possible resulting pitch.
(c) On a musical instrument, a string of linear mass density 5 g/m, vibrating in its fifth harmonic mode, will produce a wave of frequency 768 Hz when tightened to a tension of 80 N. What is the length of the string?
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