Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 9, Problem 13Q
To determine

The evidence of the abundance of iron in Earth’s core and the reason why Earth’s outer core is molten and the inner core is solid, as the deepest wells go down only a few kilometers.

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All I need help with is to find the outer core and inner core percentage and the thinkness of them too.
Earth's mass ia 6x10^24 kg and its radius is 6.4x10^6 m. What is the average mass density of Earth?  The density of the rocks compromising Earth's outermost layer (its "crust") ranges from 2000 to 3500 kg/m ^3. Based on your answer, what can you conclude about the material deep inside Earth's interior?
For B and C, the depth is 30.0KM -  Not 25 KM !!! Please help!
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