February 2019 0 22 Report
Jesli odleglosc pomiedzy grzbietem i sasiednia dolina fali, przemieszczajaca sie z szybkoscia 1.5 m/s po sznurze, wynosi 50cm to czestotliwosc tej fali wynosi
A 1/3 Hz
B 3/1 Hz
C 2/3 Hz
D 3/2 Hz
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