October 2018 1 45 Report
Dua buah benda A dan B bergetar dengan frekuensi 40 Hz dan 60 Hz. Jika amplitudo benda B dua kali amplitudo benda A, maka perbandingan periode benda A dan B adalah...
A. 1:2
B. 2:1
c. 2:3
D 3:2

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