What is the ratio of the amplitudes of the two waves?

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SUMMARY

The discussion centers on calculating the ratio of the amplitudes of two earthquake waves, where one wave carries ten times the energy of the other. The relevant equation used is I = A^2, where I represents intensity and A represents amplitude. By establishing that I1 = 10 * I2, the solution derives the amplitude ratio as A = √10, which equals approximately 3.16. This definitive calculation confirms that the amplitude of the wave with greater energy is 3.16 times that of the other wave.

PREREQUISITES
  • Understanding of wave physics, specifically amplitude and intensity relationships.
  • Familiarity with the equation I = A^2.
  • Basic knowledge of energy concepts in wave mechanics.
  • Ability to perform square root calculations.
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  • Research the relationship between energy and amplitude in wave mechanics.
  • Study the implications of wave intensity in earthquake engineering.
  • Explore advanced topics in seismic wave propagation.
  • Learn about different types of seismic waves and their characteristics.
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Students studying physics, particularly those focusing on wave mechanics, as well as professionals in seismology and earthquake engineering.

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Homework Statement



Two earthquake waves of the same frequency travel through the same portion of the Earth, but one is carrying ten times the energy. What is the ratio of the amplitudes of the two waves?

Homework Equations



I=Intensity
A=Amplitude
P=Power

I=A^2


The Attempt at a Solution

 
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You have already written the right eqn, I=A^2.

I1 = 10*I2.
 
I=10

10=A^2

SquareRoot(10)=A

A=3.16
 
Correct.

A better way to write it would be: reqd ratio = sqrt(ratio of intensities) = sqrt(10) = 3.16.
 

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