(a) What is the ratio of the intensity of an earthquake wave as it passes a poin

Physics
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(a) What is the ratio of the intensity of an earthquake wave as it passes a point 20 km from the source to the intensity as it passes a point 15 km from the source?

 
(b) What is the ratio of the amplitude of an earthquake wave as it passes a point 20 km from the source to the amplitude as it passes a point 15 km from the source?
Apr 1st, 2015

20m/15m= 1.33

1.33^2= 1.77

Ratio of intensity = 1/1.77

Ratio of amplitude = square root(1.77)= 1.33


Apr 1st, 2015

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