The movement of Earth's lithosphere is caused by convection within the ___ layer of the earth.

Physics

2 answers:

Elena-2011 [213]4 years ago

5 0

Answer:

Mantle layer

Explanation:

The convection of the mantle layer is when energy in the form of heat is transferred from the interior of the earth to the top of the planet, creating convection currents.

This convection in the mantle causes movements in the earth's tectonic plates, which are found in the lithosphere, so the <u>movement of Eath's lithosphere is caused by convection within the mantle layer on the earth</u>. This plate movements can cause earthquakes or volcanic eruptions.

Viktor [21]4 years ago

4 0

Answer:

The answer is mantle

Explanation:

Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.

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An undersea research chamber is spherical with an external diameter of 4.70 m . The mass of the chamber, when occupied, is 54300

Ira Lisetskai [31]

Answer: a) 557.3kN b) 543kN

Explanation:

Buoyant force = weight of water displaced.

Formula for buoyant force = mg×(density of fluid/density of object)

Density of fluid = density of sea water = 1025kg/m³

Mass of the chamber(m) = 54300kg

g = acceleration due to gravity = 10m/s²

Density of chamber = mass/volume

Where volume of sphere = 4/3Πr³

radius = 4.70/2 = 2.35m

Volume = 4/3×Π(2.35)³

Volume = 54.37m³

Density of chamber = 54300/54.37

= 998.7kg/m³

Substituting the values into the formula for buoyant force

Buoyant force= 54300×10×{1025/998.7}

= 557299N

= 557.3kN

b) Tension in the cable = mass of cable × acceleration due to gravity

= 54300×10 = 543000N or 543kN.

7 0

3 years ago

A coil 4.20 cm radius, containing 500 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.20×1

erma4kov [3.2K]

Explanation:

Given that,

Radius of the coil, r = 4.2 cm

Number of turns in the coil, N = 500

The magnetic field as a function of time is given by :

$B=1.2\times 10^{-2}t+2.6\times 10^{-5}t^4$

Resistance of the coil, R = 640 ohms

We need to find the magnitude of induced emf in the coil as a function of time. It is given by :

$\epsilon=\dfrac{-d\phi}{dt}\\\\\epsilon=\dfrac{-d(NBA)}{dt}\\\\\epsilon=N\pi r^2\dfrac{-dB}{dt}\\\\\epsilon=N\pi r^2\times \dfrac{-d(1.2\times 10^{-2}t+2.6\times 10^{-5}t^4)}{dt}\\\\\epsilon=N\pi r^2\times (1.2\times 10^{-2}+10.4\times 10^{-5}t^3)\\\\\epsilon=500\pi \times (4.2\times 10^{-2})^2\times (1.2\times 10^{-2}+10.4\times 10^{-5}t^3)\\\\\epsilon=2.77(1.2\times 10^{-2}+10.4\times 10^{-5}t^3)\ V$