Задача 40321.

The equation of undamped sound vibrations is given in the form: Y = 10cos0.5pt, cm. Write the equation of the wave if the speed of propagation of vibrations is 340 m/s. Find the displacement of a point located at a distance of 680 m from the source of oscillations, two seconds after the start of oscillations.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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