October 2018 1 16 Report
1) seekor burung berkicau dengan frekuensi 256 Hz merambat di udara dengan kecepatan 330 m/s. Kecepatan rambat gelombang bunyi dengan frekuensi 512 Hz di udara adalah..
a. 82,5
b. 165
c. 330
d. 660

2)seorang anak berteriak di mulut gua dan terdengar gema setelah 2 detik kemudian. Apabila kecepatan bunyi udara 340 m/s, berapakah perkiraan panjang gua tersebut?
a. 120 m
b. 150 m
c. 280 m
d. 340 m


Essai: jawablah pertanyaan berikut beserta caranya!!

1) gerak bolak balik benda secara teratur melalui titik keseimbangan disebut?

2) rumus dari periode bunyi adalah?

3) sebuah gelombang pada permukaan air dihasilkan dari suatu getaran yg frekuensinya 30 Hz. Jika jarak antara puncak dan lembah gelombang yg berturutan adalah 50 cm, hitunglah cepat rambat gelombang tersebut!

4) sinyal bunyi ultrasonik yg dipancarkan dari permukaan ke dasar laut diterima kembali setelah 8 sekon. Jika diketahui kedalaman laut adalah 6 km, berapakah cepat rambat bunyi di dalam air?
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