The layers that make up the upper mantle are the following.
- The lithosphere and the asthenosphere.
- The lithosphere and the asthenosphere are the layers that make up the upper mantle.
- The rocky outer part of the Earth is called the lithosphere.
- It is very rigid, solid, and it is not as hot as the other parts.
- According to scientists, its thickness is about 90 to 100 kilometers from the surface of the earth.
- The layer of the Earth that moves the lithospheric plates is called the asthenosphere.
- Lithospheric plates are 60 miles long on average and are composed of continental crust.
We conclude that the lithosphere and the asthenosphere are the layers that make up the upper mantle. The new lithosphere is being created at oceanic ridges due to plate tectonics. Yes, planet Earth is getting larger constantly.
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Answer:
Part a)
Part b)
Explanation:
Part a)
as the mass of the suspension system is given as
also we have
so now for force balance we have
Part b)
Now we know that amplitude decreases by 63% in each cycle
so after one cycle the amplitude will become 37% of initial amplitude
so it is given as
also we know
here t = time period of one oscillation
so it is
now damping constant is
The period is given by
Squaring this gives
Plotting this period as a function of length
gives
where the slope, m, is
15+3=18km/hour
Think about it like this. The boat is going 15 faster than the river, and the river is going 3 faster than the bank, so the boat is going 18 faster than the river bank