89. The equation for a plane wave has the form ξ (x, t) = 0.005cos (628t - 2x) (m). Determine: 1) the frequency of oscillation and the wavelength; 2) phase velocity; 3) maximum value of speed and acceleration of oscillations of particles of the medium.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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