Physics

Wave propagation speed

Wave propagation speed



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Since they do not carry matter in their motion, it is predictable that the waves will travel with continuous velocity, so they must have a displacement that validates the expression:

Which is common to uniform movements, but knowing the structure of a wave:

We can do that ΔS = λ and that Δt = T. Like this:

This is the fundamental equation of the waveas it is valid for all wave types.

Frequencies of the order of kHz (1 kilohertz = 1000Hz) and MHz (1megahertz = 1000000Hz) are commonly used.

Example:

(1) What is the frequency of waves, if its speed is 195m / s, and its wavelength is 1cm?

1cm = 0.01m