October 2018 2 69 Report
Perhatika setelah menjadi kilat, 4 detik kemudian terdengar bunyi guntur. jika cepat rambat bunyi di udara 340 m/s maka jarak terjadinya petir dari pengamat adalah...
a. 170m
b. 340m
c. 680m
d. 1360m
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