Answer:
a. part of the planet's interior is liquid
Explanation:
Seismic waves are slowed down in a liquid medium. On earth, molten areas reduces the speed of P waves and completely stops S waves which have shearing motion that can only be transmitted through a solid
The motion has the highest speed in materials, allowing it to be detected first on seismograms. The P wave is has a smaller wavelength and a higher frequency than the surface ans the S waves.
Answer:

Explanation:
Four people standing on the ground each of mass and usually this questions have to find the final angular velocity

The radius 
Angular velocity 
The moment of inertia total is 
Momento if inertia


Angular momentum

Solve to w2



Answer:
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Answer:
See explaination
Explanation:
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