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den301095 [7]
3 years ago
5

How have earthquake data been used to explore the size of convection currents in the mantle?

Physics
1 answer:
nadezda [96]3 years ago
8 0
 <span>Vibration waves from earth quakes travel through the earth and have measurable speed. And the different temperatures and fluidity of the various regions of the mantle will change that speed and or reflect the vibration waves in different directions. With multiple vibration sensors around the world the time that it takes for vibrations to travel from one part of the world to another will tell you what is inside.</span>
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The weather is warm and dry what changes would a cold front bring
MissTica
<span>A cold front separates a cold, dry air mass from a warm air mass.</span>
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2 years ago
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Two hoops, starting from rest, roll down identical inclined planes. The work done by nonconservative forces, such as air resiste
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Answer: both hoops have the same kinetic energy at the bottom of the incline.

Explanation:

If we assume no work done by non conservative forces (like friction) , the total mechanical energy must be conserved.

K1 + U1 = K2 + U2

If both hoops start from rest, and we choose the bottom of the incline to be the the zero reference level for gravitational potential energy, then

K1 = 0 and U2 = 0

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If both inclines have the same height, and both hoops have the same mass m, the  change in kinetic energy, must be the same for both hoops.

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3 years ago
The voltage between two parallel plates separated by a distance of 3. 0 cm is 120 v. The electric field between the plates is?
Lapatulllka [165]

The electric field between plates is 4000V/m.

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The value of the electric field has dimensions of force per unit charge. In the metre-kilogram-second and SI systems, the appropriate units are newtons per coulomb, equivalent to volts per metre.

The voltage between points A and B is

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Given:

distance d = 3 cm

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                     E = 40 V / 1 cm               [ 1 cm = 1/100 m ]

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Learn more about Electric field here:

brainly.com/question/8971780

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