How many magnitude 8 earthquakes does it take to equal the energy release for a magnitude 9 earthquake?

1 answer:

8 0

The popular Richter scale for measuring the magnitude of earthquakes is based on a log₁₀ scale.
Therefore, a magnitude 9 earth quake is 10 times a magnitude 8 earthquake.

That is, it takes ten magnitude 8 earthquakes to equal the energy released by one magnitude 9 earthquake.

Answer: 10

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Explanation:

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Leila is building an aluminum-roofed shed in her backyard to store her garden tools.The flat roof will measure 2.0 x 3.0m in are

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Answer: 0.0138 m^2 = 138 cm^2

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The dilation is proportional to the change in temperatur.

For linear dilation, the proportionality constant is called linear dilation coefficient of the materials, it is named α and is measured in °C ^-1.

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There is also superficial dilation, for which the dilation is:

ΔA = β * Ao * ΔT, which means that the superficial dilation (or contraction) is proportional to the product of the original area (Ao) and the change of temperature (ΔT).

It is very interesting and important to solve problems that β = 2α, because regularly you will find the values of α for different materials and so, you just to multiply it times 2 to use β.

For this problem:

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Nadusha1986 [10]

Answer:

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$I\cdot \omega_{o} = 2\cdot I \cdot \omega_{f}$