The graphs below may represent either a picture of the shape of a wave on a string at a particular instant in time, t1, or the transverse (up and down) velocity of the mass points of that string at that time. Depending on what they are, the wave on the string may be: a right going traveling wave a left going traveling wave a part of a standing wave growing in amplitude at time t1 a part of a standing wave shrinking in amplitude at time t1 For each of the following cases, decide what the wave is doing and choose one of the four number (1)-(4) or none (N). Graph A is a graph of the string's shape and graph B is a graph of the string's velocity. ---Select--- 1 2 3 4 N Graph A is a graph of both the string's shape and the string's velocity. ---Select--- 1 2 3 4 N Graph B is a graph of the string's shape and graph A is a graph of the string's velocity. ---Select--- 1 2 3 4 N
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.
The graphs below may represent either a picture of the shape of a wave on a string at a particular instant in time, t1, or the transverse (up and down) velocity of the mass points of that string at that time. Depending on what they are, the wave on the string may be:
- a right going traveling wave
- a left going traveling wave
- a part of a standing wave growing in amplitude at time t1
- a part of a standing wave shrinking in amplitude at time t1
For each of the following cases, decide what the wave is doing and choose one of the four number (1)-(4) or none (N).
- Graph A is a graph of the string's shape and graph B is a graph of the string's velocity.
---Select--- 1 2 3 4 N - Graph A is a graph of both the string's shape and the string's velocity.
---Select--- 1 2 3 4 N - Graph B is a graph of the string's shape and graph A is a graph of the string's velocity.
---Select--- 1 2 3 4 N
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