October 2018 1 45 Report
Penjual es krim membunyikan musik dgn frekuensi 400Hz.jika kecepatan rambat bunyi di udara sebesar 342 m/s, panjang gelombang bunyi musik dihasilkan sebesar......cm
a.116,9
b.85,5
c.13,6
d.11,5
Tolong dijwb ya beserta caranya...
sebelumnya Trima kasih.n

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