October 2018 2 28 Report
PAKAI CARA
1. Ledakan petir terdengar 5 sekon setelah terlihat kilat, berapakah cepat rambat bunyi di udara saat itu jika jarak antara pengamat dan tempat terjadinya petir 1,5 km?
a. 0,3 m/s
b. 30 m/s
c. 300 m/s
d. 3000 m/s
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