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k0ka [10]
3 years ago
5

Which of the following lists the Earth’s layers in order from hottest to coldest in temperature?

Physics
2 answers:
Sav [38]3 years ago
8 0
The answer is C, Inner core, outer core, mantle, crust.
ozzi3 years ago
4 0
Well,

Logically, the deeper we go, the hotter it will get.

It turns out that the innermost part of the lithosphere is the hottest, while the outermost part of the lithosphere is the hottest (suprise!).

Option C is correct.
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A hollow cylinder of mass 2.00 kgkg, inner radius 0.100 mm, and outer radius 0.200 mm is free to rotate without friction around
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Answer: 2.86 m

Explanation:

To solve this question, we will use the law of conservation of kinetic and potential energy, which is given by the equation,

ΔPE(i) + ΔKE(i) = ΔPE(f) + ΔKE(f)

In this question, it is safe to say there is no kinetic energy in the initial state, and neither is there potential energy in the end, so we have

mgh + 0 = 0 + KE(f)

To calculate the final kinetic energy, we must consider the energy contributed by the Inertia, so that we then have

mgh = 1/2mv² + 1/2Iw²

To get the inertia of the bodies, we use the formula

I = [m(R1² + R2²) / 2]

I = [2(0.2² + 0.1²) / 2]

I = 0.04 + 0.01

I = 0.05 kgm²

Also, the angular velocity is given by

w = v / R2

w = 4 / (1/5)

w = 20 rad/s

If we then substitute these values in the equation we have,

0.5 * 9.8 * h = (1/2 * 0.5 * 4²) + (1/2 * 0.05 * 20²)

4.9h = 4 + 10

4.9h = 14

h = 14 / 4.9

h = 2.86 m

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★CHECK MY ANSWER PLEASE★
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You are correct!
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