October 2018 2 32 Report
Sbuah tali di getarkan membentu dua bukit dan satu lembah panjang nya 12 cm .jika frekuensi gelombang 4 Hz.besaranya cepat rambat gelombang adalah
a.32cm/s
b.48cm/s
c.0.5cm/s
d.2cm/s
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