October 2018 2 80 Report
Sebuah kapal memancarkan bunyi ke dsr laut 2 sekon kemudian terdengar bunyi pantul dari dasar laut jika cpt rambat dlm air 1400m/s maka ke dalaman laut tersebut adalah..........
a.700 m b.1.050m c.1.400m d.1.800m
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