Okay, it is very simple. The formula is: the velocity is equal to the product of the frequency and wavelength.
v= fλ
the lambda is the wavelength. Using basic arithmetic, you can rearrange the equation to :
λ= v/f
There you go. That's how to find the wavelength
Wavelength of any wave, transverse or longitudinal is dependent on both the speed of the wave and the frequency of the wave, and can be related to these parameters by the following equation:
velocity of wave= frequency x wavelength
therefore, wavelength= velocity/ frequency.
by measuring between adjacent rarefactions
wavelengths in longitudinal waves are measured by the distance between contractions or rarefactions, therefore, your could use time as a measurement or distance.
From the peaks of intensity, just like transverse waves. The peak is where the lines are closest together.
Wave length..
Speed.
Distance from one crest to the next crest of a wave.
1 wavelength in a transverse wave is equal too the distance between crest and crest or trough and trough
When you have the complete compression and rarefaction of a longitudinal wave, that is one complete wave.
Wave length..
Yes. To be precise, the wavelength is the length of one precise cycle, and one way to measure that is from top to top.
Speed.
If I understand the question correctly, that's one-quarter of a full cycle, so it is 1/4 of the wavelength. The wavelength varies from wave to wave - and this has nothing to do whether the wave is transverse or longitudinal.
Distance from one crest to the next crest of a wave.
there are two answers, one involves wavelength and the other frequency
1 wavelength in a transverse wave is equal too the distance between crest and crest or trough and trough
The speed of a wave equals the frequency times the wavelength (speed = frequency x wavelength). Therefore, the wavelength would equal the speed divided by the frequency. Also, the speed of a wave in a vacuum is the speed of light, c, which is a constant.
When you have the complete compression and rarefaction of a longitudinal wave, that is one complete wave.
Wavelength is the distance between the crest of one wave and the crest of the next wave so you just measure it I guess.
That might be "wavelength", written wrong. That refers to the distance between one maximum and the next on a wave - the distance of a full period. Lengthwave might also be an incorrect term for a longitudinal wave.
A wavelength. In a given wave, if we measure the distance from a peak to a peak, or a trough to a trough, or even from the beginning of one "up" or "down" cycle to the beginning of the next "up" or "down" cycle (respectively), we should get the same measurement (the wavelength) for that wave with every measuring event.