Solve the Problem $$\log _ { 10 } \left( \mathrm { I } / \mathrm { I } _ { 0 } \right)$$

question 127

Multiple Choice

Solve the problem.
-An earthquake was recorded with an intensity which was 50,119 times more powerful than a reference level earthquake, or 50,119 · I0. What is the magnitude of this earthquake on the Richter
Scale (rounded to the nearest tenth) ? Intensity on the Richter scale is $$\log _ { 10 } \left( \mathrm { I } / \mathrm { I } _ { 0 } \right)$$

• A) 4.7
• B) 3.7
• C) 10.8
• D) 0.5

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