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What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 15 km and 49 km from the source
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What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 15 km and 49 km from the source

User Prasanth S
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3 votes

Answer:

Step-by-step explanation:

Intensity is defined as a time-average measure of the Power density of any wave at a particular location.

Intensity of a wave is inversely proportional to the square of the distance from the source i.e.


I\propto (1)/(d^2)


d_1=15\ km


d_2=49\ km


(I_1)/(I_2)=((d_2)/(d_1))^2


(I_1)/(I_2)=((49)/(15))^2


(I_1)/(I_2)=(3.266)^2


(I_1)/(I_2)=10.67

User Dan Champagne
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