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Anna71 [15]
3 years ago
13

The earth's interior heat and pressure drive a process of heat transfer in the mantle called _____.

Physics
2 answers:
Galina-37 [17]3 years ago
5 0
Convection. It is the transfer of heat by the circulation and movement of the molecules that come from liquid or gas.
almond37 [142]3 years ago
5 0
<h3><u>Answer;</u></h3>

Convection

The earth's interior heat and pressure drive a process of heat transfer in the mantle called <em><u>convection</u></em>.

<h3><u>Explanation;</u></h3>
  • <em><u>Convection is the process of heat transfer that occurs in fluid through convection current. This process may occur in a natural setting such as in the earth's mantle.</u></em>
  • <em><u>The plate tectonics in the earth surface are driven by the convection currents in the magma. The intense heat in the core of the earth causes molten rocks in the mantle to move in a pattern called convection cell that results from the cooling of the rising denser warm material which eventually sink.</u></em>
  • This transfer of the heat from the mantle to the surface of the earth by convection is similar to the hot water, which involves convection currents.
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Answer:

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As the angular momentum of the system is conserved

I_i\omega_i=I_f\omega_f\\\Rightarrow \omega_f=\dfrac{I_i\omega_i}{I_f}\\\Rightarrow \omega_f=\dfrac{9.3\times 1.8}{5.1}\\\Rightarrow \omega_f=3.28235\ rev/s=3.28235\times 2\pi=20.62361\ rad/s

The resulting angular speed of the platform is 20.62361 rad/s

Change in kinetic energy is given by

\Delta K=\dfrac{1}{2}(I_f\omega_f^2-I_i\omega_i^2)\\\Rightarrow \Delta K=\dfrac{1}{2}(5.1\times (20.62361)^2-9.3\times (1.8\times 2\pi)^2)\\\Rightarrow \Delta K=489.81804\ J

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6 0
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The resultant vector is 11√2 km due north east.

<h3><u>Explanation:</u></h3>

The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.

We need to calculate the magnitude and direction separately.

Here firstly for the magnitude,

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So the resultant vector is due north east.

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Answer:

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