Use the formula .
In October 2004, an earthquake measuring 6.8 on the Richter scale occurred in Japan. The largest quake in Japan since 1990 was one in 1993 that registered 7.7. How many times more severe was the 1993 shock than the one in 2004 on the Richter scale? Round your answer to one decimal place.
A) 0.7 times as severe
B) 1.9 times as severe
C) 7.9 times as severe
D) 9.3 times as severe
E) 19.1 times as severe
Correct Answer:
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