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lesya [120]
3 years ago
10

What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 14 km and 49 k

m from the source?
Physics
1 answer:
Molodets [167]3 years ago
6 0

Answer:

\dfrac{I_1}{I_2}=12.25

Explanation:

r_1 = 14 km

r_2 = 49 km

Intensity of a wave is inversely proportional to distance

I\propto \dfrac{1}{r^2}

So,

\dfrac{I_1}{I_2}=\dfrac{r_2^2}{r_1^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{49^2}{14^2}\\\Rightarrow \dfrac{I_1}{I_2}=12.25

The ratio of the intensities is \dfrac{I_1}{I_2}=12.25

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Answer:

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<span>Reference https://www.physicsforums.com/threads/elastic-collision-with-conservation-of-momentum-problem.651261...</span>
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3 years ago
What two factors affect the strength of a magnetic field
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