Kamis, 20 September 2012

Rumus Laska


Rumus LASKA
Untuk menghitung jarak episentrumRumus:  = (-P±1¶ ] x 1000

Contoh
Pada tangga1 januari 2001 di Jakarta,gelombang primer tercatat pada pukul4.30 WIB sedangkan gel sekunder padapukul 4.33 WIB. Berapa jarak episentrumdari kota jakarta ?

Jawab
D
iketahui : P = 4.30 WIBS = 4.33 WIB
D
itanya: Jarak Episentrum ?Jawab [(S-P±11000= [ (4.3±4.30±1] x 1000= [ ±1] x 1000= 2000 km dari Jakarta

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