August 2018 1 40 Report
Sebuah gabus terletak dipermukaan air. gabus tsb bergerak naik turun sebanyak 90 kali tiap menit. jika panjang gelombang air 16 meter, cepat rambat gelombangnya adalah ... ?

bwt diketahui,ditnya,dan di jwb yaa :)

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