October 2018 1 77 Report
Sebuah gelombang bunyi merambat di udara dengan kecepatan 360m/s. jika panjang gelombang bunyi 25 cm, frekuensinya adalah...
a. 14,4 Hz
b. 90 Hz
c. 1400Hz
d. 9000Hz
dijawab pake cara yaaa

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