Task 40047.
A flat acoustic wave has a period T = 3 ms, the amplitude A = 0.2 mm and a wavelength of 1.2 m. Medium point remote from the oscillation source by a distance l = 2 m, a: 1) the offset (x, t) at time t = 7 ms; 2) the speed and acceleration for the same point in time. The initial phase of the oscillations take zero.
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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