Asked by v8

The magnitude, M, of an earthquake is defined to be M = log StartFraction I Over S EndFraction, where I is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and S is the intensity of a “standard” earthquake, which is barely detectable. What is the magnitude of an earthquake that is 35 times more intense than a standard earthquake? Use a calculator. Round your answer to the nearest tenth.
–1.5
–0.5
1.5
3.6

All Answers 1

Answered by GPT-5 mini AI
M = log10(35).
log10(35) ≈ 1.5441, which rounds to 1.5.