February 2023 1 68 Report
Doni meniup peluit di depan tebing yang jaraknya 85 meter. Jika bunyi pantul terdengar 0,5 sekon setelah bunyi asli, maka cepat rambat bunyi di udara saat itu adalah ….
A. 170 m/s
B. 340 m/s
C. 360 m/s
D. 400 m/s​

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