Earthquakes can be analyzed with the formula: M_2 - M_1 = A_2 A_1 where is the…
MATHEMATICS · Single correct · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms
Problem
Earthquakes can be analyzed with the formula:
M2−M1=logA1A2
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