October 2018 1 34 Report
Bunyi petir terdengar 4 sekon setelah kilatan cahaya terlihat . juika cepat rambat bunyi di udara 300 m/s , jarak sumber petir ke pengamat adalah ...
a. 159 m
b. 300 m
c. 75 m
d. 600 m
tolong jawabkan sama caranya
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