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3 years ago

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Which answer explains why plate B is moving underneath plate A

1 answer:

blsea [12.9K]3 years ago

4 0

Answer:

A.

Explanation:

Earth is composed of different layers and one layer moves over another due to differences in the densities.

According to the physics of density, a substance having less density floats over a higher density substance. The oceanic crust has more density than the continental crust that is why continental crust float over oceanic crust.

So in the given example, plate B is moving below the plate A, it means plate B is more dense than plate A because plate B is composed of oceanic crust . <u>For example : continents float over the asthenosphere (a layer below the lithosphere).</u>

Hence, the correct answer is "A ".

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Answer:

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You and your friend are going bungee jumping! You wait directly below them with a camera. When they leap from the bridge they be

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Answer:

The amplitude is $A = 90.2 \ m$

Explanation:

From the question we are told that

The frequency of when sound is approaching observer is $f = 392 Hz$

The frequency as the move away from observer is $f_ a = 330 \ Hz$

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Here you are the observer and your friends are the source of the sound

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Now using Doppler Effect,

The source of the sound is approaching the observer

The

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$392 = f_o (\frac{v}{v- wA} )$

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Here $f_o$ is the fundamental frequency

Dividing the both equation we have

$\frac{392}{330} = \frac{f_o(\frac{v}{v-wA} )}{f_o(\frac{v}{v+wA}}$

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