Mathematics

Problem

Earthquakes can be analyzed with the formula:

M_2 - M_1 = \log \frac{A_2}{A_1}

where

M

is the magnitude of the earthquake (unitless), and

A

is the seismograph amplitude of the earthquake being measured (m). The magnitude of an earthquake with triple the seismograph amplitude of a magnitude 5.0 earthquake is? A. 5.5 B. 8.2 C. 9.0 D. 15.0

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