Question

Magnitude of an earthquake : M = log I /S What is the magnitude of an earthquake that is 10,000 times more intense than a standard earthquake?

Answer 1

Answer: 3.7 is the second answer

Explanation:

Answer 2

Magnitude of an earthquake = 4

Explanation:

If the given equation represents the magnitude of an earthquake

M = log (
`(I)/(S))`

Here
`((I)/(S))` is the ratio of Intensity and standard earthquake.

We have to calculate the magnitude of an earthquake that is 10000 times more intense than a standard earthquake.

Means ratio I:S is 10000.

`(I)/(S)=(10000)/(1)`

Then Magnitude =
`log ((10000)/(1))`

Magnitude = log (10000) =
`log (10^(4))`

= 4 log(10) = 4×1 = 4