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Suppose earthquake A measures 3.2 on the Richter Scale. What was the Richter scale measure
of earthquake B if it was 1900 times more powerful than earthquake A?
Suppose earthquake A measures 3.2 on the Richter Scale. What was the Richter scale measure
of earthquake B if it was 1900 times more powerful than earthquake A?
Solution
Msf = log(Isf/S)
8.3 = log(Isf/S)
Now Msa = log(Isa/S)
Given Isa = 1900Isf
So, Msa = log(1900Isf/S)
= log 1900 + log(Isf/S)
= 3.278 + 3.2
= 6.478

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  • 1. Suppose earthquake A measures 3.2 on the Richter Scale. What was the Richter scale measure of earthquake B if it was 1900 times more powerful than earthquake A? Suppose earthquake A measures 3.2 on the Richter Scale. What was the Richter scale measure of earthquake B if it was 1900 times more powerful than earthquake A? Solution Msf = log(Isf/S) 8.3 = log(Isf/S) Now Msa = log(Isa/S) Given Isa = 1900Isf So, Msa = log(1900Isf/S) = log 1900 + log(Isf/S) = 3.278 + 3.2 = 6.478