(numbers 15-16) When two closed tubes (closed at one end) of different lengths each resonate at their 5th harmonic, a 5 Hz beat frequency is observed. d 15. If one tube has length L, at which distance from the open end is a displacement node found? a) L/5 b) 2L/5 c) 3L/5 d) L e) more than one of the above answers are correct 16. Both tubes are now opened at both ends. When each tube now resonates at its 2nd harmonic frequency, what beat frequency is observed? a) 2 Hz b) 4 Hz c) 6 Hz d) 8 Hz e) more information is needed to determine
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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