does velocity of sound waves depends on amplitude.how?

Answer 1

The amplitude of sound wave has nothing to do with velocity (phase) of sound waves. Thus, even mention of loudness, for amplitude or energy of sound waves, is not warrented here.

Try making a sine wave of given wavelength LAMDA and amplitude 'A'. The dual peaks of 'A' indicate the pressure which the medium exerts on characterstic frequency (source producing that wave) to change polarity (returing towards x-axis) on either sides. You can increase/decrease the 'A' without changing LAMDA on graph, but this will be done by different medium, whereas the source of wave (frequeny) is still the same.

Please note that frequeny of wave n = (v / Lamda) is universal for the material that produces that sound - say a siren. This sirun sound may pass through various mediums (refractive indices) one after the other. n remains constant because source (sirun) is not undergoing change of mediums - and that property forces the wave to alter the ratio of "V' and 'Lamda' in such a way that it always produces the result 'n'.

Friends, in physics, formulae and participating variables or constants are very crucial to keep eyes on. If there are 5 variables/constants then "the physics" is serviced in such a magnanimous way that only 4 will have independence to vary, but to keep the "fifth" conserved.

If you enticed by my learnt and thought out measures - Do acknowledge - it will entreat me to express more. We are from a family of physics who have always taken the cause of surprising/ sensitising the "young brains"- we are still learning the art of explaining.

wishing you all good learning

Answer 2

Velocity Of Sound Wave

Answer 3

There are two kinds of wave: compression and transverse. Sound is made up of compression waves having frequencies in the range of hearing. Compression waves are those in which any particle of a wave is moving in the direction of the wave.

Transverse waves are those in which any particle in a wave is moving perpendicular to the direction of the wave. Ripples on the surface of a pond are transverse waves. [See source.]

For both types of wave, the velocity of a wave is defined to be v = L/t; where L is the wave length and t is the time it takes to cycle through one wavelength. t is called a period and 1/t = f = the frequency of the wave. And that's it...no amplitude in this equation. [See source.]

The velocity of sound waves depends solely on the wavelength and frequency of the waves; i.e., v = L/t = Lf. Note that v also depends on the medium the compression wave is passing through. But that is because L, f, or both are changed by that medium; their changes in turn change the velocity. Thus, the choice of medium will not change the velocity, but it will change the factors that go into determining that velocity.

As one answerer put it, amplitude does determine the energy stored in each wave. In fact E ~ A^2; where E is the transport energy of the wave (the energy it carries) and A is the wave amplitude. As A is squared in this relationship, doubling the amplitude will quadruple the energy, which we interpret as loudness. Bottom line, amplitude determines how loud the sound waves are, but it does not determine how fast those waves are traveling to your ears. [See source.]

Of a cool note...if we consider light as a transverse wave, v = Lf = c; where c = constant = velocity of light. Thus, for light, if the frequency of light goes up, the wavelength must go down...and vice versa...to preserve c as a constant.

Answer 4

Not too sure but I think it depends on the medium that the sound travels through. In air sound waves travel at approx 330 meters per second.

Answer 5

No. The velocity of sound in a given medium is constant.

Answer 6

No. It depends on the medium it is travelling in. Amplitude is only how loud the sound is. And it will determine how far the sound will eventually travel or how far aware an observer will be able to detect the sound.

Answer 7

The speed of sound depends on the medium it travels in. In air, it's about 330m/s, in water, about 1500m/s, in some solids, about 3000m/s. Amplitude means how loud the sound is, not how fast it travels.

Answer 8

The bigger the wave, the longer it takes to cycle through it.

Answer 9

NO.