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TUGAS MANDIRI BUNYI
Nama : ..Kelas : ..
1. a. Tuliskan pengertian bunyi.b. Tuliskan 3 ( tiga ) sifat
bunyi.
2. Tuliskan pembagian bunyi berdasarkan batas pendengaran
telinga manusia. Berilah contoh siapa saja yang dapat mendengar
setiap kelompok bunyi tersebut.
3. Suatu bunyi menghasilkan frekuensi 350 hz. Apabila panjang
gelombang bunyi tersebut 0,5 m. Hitunglah kecepatan bunyi!.
4. Ketika hari mendung Andi melihat kilat menyambar di langit,
dan 3 sekon berikutnya mendengar ada suara gemuruh. Jika cepat
rambat bunyi di udara saat itu 340 m/s, hitunglah jarak sumber
kilat terhadap Andi.
5. The limit of human hearing is at the frequency of 20 Hz to
20.000 Hz. What the shortest and the longest wave length received
on normal ears if the speed of sound in air is 340 m/s.
6. A source or sound has a 0,9 cm wavelength and a frequency of
330 Hz. What the speed of sound ?
7. Suatu sumber bunyi bergetar dengan periode 0,002 sekon .
Merambat menuju suatu tempat sejauh 990 meter ditempuh selama 3
sekon.a. Hitung cepat rambat bunyi.b. Berapa panjang
gelombangnya?
8. Seutas senar dengan panjang L bergetar dengan frekuensi 3200
Hz. Berapa frekuensi senar apabila panjang senar:a. 2 x semulab. x
semulac. dikurangi 20%.
9. Sebuah garpu tala dengan frekuensi 400 Hz digunakan pada
percobaan resonansi kolom udara. Ketika terjadi resonansi I (
pertama ) panjang kolom udara 20 cm. Hitunglah :a. cepat rambat
bunyi saat itu.b. panjang kolom udara saat resonansi ke-III.
10. Sebuah kapal laut memancarkan bunyi ultrasonik kedasar laut
dengan kedalaman 6000 meter. Cepat rambat bunyi dalam air 1500 m/s.
Berapa selang waktu yang diperlukan bunyi semenjak dipancarkan
hingga diterima kembali?
Diserahkan : 13 April 2015
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11. From the bottom part of a ship, ultrasonic pulses is
transmitted to the bottom of the sea. If the time interval is 5
seconds and the speed of sound in the water is 1500 m/s, what the
depth of the sea ?
12. Sebuah kapal memancarkan sinyal ke dasar laut. Setelah 5
sekon sinyal itu diterima kembali oleh kapal. Apabila cepat rambat
bunyi air laut 1500 m/s, tentukan kedalaman laut!
13. Sebuah kapal laut memancarkan bunyi ultrasonik dari sebuah
Fathometer kedasar laut dan 1,5 sekon kemudian bunyi ultrasonik
diterima kembali pada bagian penerima Fathometer. Jika cepat rambat
bunyi dalam air 1500 m/s hitung kedalaman laut.
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