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3 years ago

An area where a mantle plume allows magma to burst through a tectonic plate NOT near a boundary is ______________.

1 answer:

7 0

I don't know the answer but I do know this
A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust.[3] The currently active volcanic centers are known as "hot spots". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.

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A mosquito and a truck have a head-on collision. Which has a larger change of momentum?

Maksim231197 [3]

Answer:

C. They have the same change of momentum.

Explanation:

Let "m" be the mass and "v" the velocity.

According to the property of conservation of momentum, when objects 1 and 2 collide:

$m_{a}v_{ai} + m_{b}v_{bi} = m_{a}v_{afinal} + m_{b}v_{bfinal}\\m_{b}v_{bfinal} - m_{b}v_{bi} = m_{a}v_{ai} - m_{a}v_{afinal}\\\Delta (m_{b}v_{b}) = -\Delta (m_{a}v_{a})$

Therefore, one can conclude that the change in momentum (Δ(mv)) has the same magnitude but opposite sign for any two objects regardless of how much heavier one might be than the other.

They have the same change of momentum.

8 0

3 years ago

Wood is an example of a translucent material.<br> True<br> False

Svetradugi [14.3K]

False, wood is a solid structure that is not see through

3 0

3 years ago

An object is 27.0 cm from a concave mirror of focal length 15.0 cm. find the image distance.

pantera1 [17]

The distance of the Image will be -33.75 cm

A concave mirror has an inward-curving reflecting surface that faces away from the light source. Unlike convex mirrors, a concave mirror's image forms a variety of images based on the object's proximity to the mirror.

Given that, an object placed 27 cm from a concave mirror having the focal length of 15 cm

We have to find distance of the Image

Using Mirror Formula:

1/f = 1/v + 1/u

Where,

f = focal length

v = Image distance from the mirror

u = object distance from the mirror (concave)

Substitute the known values in the above formula to find the value of 'v' i.e. from the mirror.

1/(-15) = 1/v + 1/(-27)

1/(-15) = 1/v - (1/27)

1/v = -0.029

v = -33.75 cm

Therefore the distance of the Image will be -33.75 cm

Learn more about concave mirror here:

brainly.com/question/9816370

#SPJ10

8 0

2 years ago

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2

Tasya [4]

Answer:

Coefficient of friction = 0.836

Explanation:

If v be the speed after one quarter of the circular path

v² = 2as = 2 x 1.85 x 2πr/4 ; v²/r = 1.85 x 3.14 = 5.8

tangential acceleration = 5.8 m/s²

radial acceleration = v² /r = 5.8

total acceleration = √2 x 5.8

m x√2 x 5.8 = m x g xμ

μ = √2 x 5.8 / 9.8 = 0.836

7 0

3 years ago

What is the magnitude of g at a height above Earth's surface where free-fall acceleration equals 6.5m/s^2?

prohojiy [21]

You've given the answer, right there in your question.

The "magnitude of gravity" is described in terms of the acceleration
due to it, and you just told us what that is.

We can also notice that the figure you gave is about 0.66 of the
acceleration due to gravity on the Earth's surface. That tells us that
the distance from the Earth's center at that height is about

(1 / √0.66) = 1.23 times

the Earth's radius, so the height is about 910 miles above the surface.

7 0

3 years ago