Consider an object that generates a constant sound frequency of f = 1200 Hz. A second wave of lower frequency was emitted and interfered with the first. In t = 15 s, n1 = 58 beats were heard. What is an expression for the frequency (f2) of the second sound wave? If a new sound wave with wavelength λ interferes with the initial sound wave (of frequency f), write an expression for how many beats (n2) will be heard in time t2. Given the speed of sound is vs, and assume that the new wavelength is longer than the original. A final wave was emitted and interfered with the initial and has a period of T = 0.0012 s. Calculate the beat frequency (fb) between the two waves (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.
Consider an object that generates a constant sound frequency of f = 1200 Hz.
- A second wave of lower frequency was emitted and interfered with the first. In t = 15 s, n1 = 58 beats were heard. What is an expression for the frequency (f2) of the second sound wave?
- If a new sound wave with wavelength λ interferes with the initial sound wave (of frequency f), write an expression for how many beats (n2) will be heard in time t2. Given the speed of sound is vs, and assume that the new wavelength is longer than the original.
- A final wave was emitted and interfered with the initial and has a period of T = 0.0012 s. Calculate the beat frequency (fb) between the two waves (in Hz).
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