No matter which one you are going to calculate the parameters, move all of the original values ​​in the SI system.Then the result will be in units of the same system.If necessary, use a calculator capable of, in addition to the mantissa, and the display order of the number, as in solving problems on "Oscillations and Waves" have to deal with both very small and very large quantities.
If known wavelength and speed of propagation of vibration frequency calculated as follows:
F = v / λ, where F - the frequency (Hz), v - speed of wave propagation in the medium (m /c), λ - wavelength (m).
speed of light in vacuum, usually denoted by another letter - c (Latin).Note that the speed of
light in any other environment, except the vacuum is less than the velocity of light in vacuum.If one or the other particle passes through a medium at a speed, although at the speed of light, but the speed of light in this environment, there is a so-called Cherenkov glow.
If you know the frequency, the period can be found in the case, if the speed of propagation of oscillations is unknown.The formula for calculating the period of the frequency as follows:
T = 1 / F, where T - the period of oscillation (s), F - frequency (Hz).
follows from the above that to find the frequency, knowing the time, it is also possible without information on the speed of propagation of the oscillations.The way to find the same:
F = 1 / T, where F - the frequency (Hz), T - oscillation period (s).
To learn cyclic oscillation frequency, first calculate their usual frequency of any of the above methods.Then multiply it to 2π:
ω = 2πF, where ω - angular frequency (radians per second), F - a common frequency (Hz).
It follows that for the calculation of normal frequency in the presence of information about cycling should use the reverse formula:
F = ω / (2π), where F - a common frequency (Hz), ω - angular frequency (radians per second).
In solving problems of finding period and the oscillation frequency and wavelength using the following physical and mathematical constants:
- the speed of light in a vacuum: c = 299792458 m / s (some researchers, in particular,Creationists believe that in the past, this physical constant may have a different value);

- speed of sound in air at atmospheric pressure and at zero degrees Celsius: Fzv = 331 m / s;

- the number of "pi" (to mark the fiftieth): π = 3,14159265358979323846264338327950288419716939937510 (dimensionless).
speed of light in a material with a refractive index of n (and dimensionless), calculate by dividing the speed of light in the refractive index.
After calculation, if necessary, turn the result of SI at your unit.