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4 years ago

What is it called when sediment is dropped and comes to rest?

Physics

2 answers:

inna [77]4 years ago

5 0

Answer: b. deposition

Explanation:

Erosion is a phenomenon in which there is movement of rocks, sediment, or soil as a result of human activities or by the force of moving wind.

Deposition is a phenomenon when the movement of the transported materials slow down and are dropped in a new location.

Weathering is a phenomenon in which the rocks are broken by physical or chemical factors.

Compaction is a phenomenon in which there is formation of a solid specimen of defined geometry due to association of particles generally caused by compression.

larisa86 [58]4 years ago

3 0

I think d would be the answer.

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A cell membrane has a thickness of about 7 nm. How many cell membranes would it take to make a stack 2.3 in high?

Alisiya [41]

Answer:

There are 8345714 cell membranes.

Explanation:

It is given that,

The thickness of a cell membrane is 7 nm

We need to find the number of cell membranes would it take to make a stack 2.3 inches high.

Firstly, the units must be same i.e. converting 2.3 inches to m

1 inch = 0.0254 m

2.3 inches = 0.05842 m

Let there are n number of cell membranes. So,

$n=\dfrac{\text{stack height}}{\text{1 membrane thickness}}\\\\n=\dfrac{0.05842}{7\times 10^{-9}}\\\\n=8345714.28$

n = 8345714 cell membranes

5 0

3 years ago

Learning Goal: To understand the concept of moment of inertia and how it depends on mass, radius, and mass distribution.

marshall27 [118]

Answer:

m₂ = 4 kg

Explanation:

The moment of inertia is defined by

I = ∫ r² dm

for bodies with high symmetry it is tabulated, for a spherical shell

I = 2/3 m r²

in this case the first sphere has a radius of r₁ = 2m and a mass of m₁ = 1 kg, the second sphere has a radius r₂ = 1m.

They ask what is the masses of the second spherical shell so that the moment of inertia of the two is the same.

I₁ = ⅔ m₁ r₁²

I₂ = ⅔ m₂ r₂²

They ask that the two moments have been equal

I₁ = I₂

⅔ m₁ r₁² = ⅔ m₂ r₂²

m₂ = (r₁ / r₂) ² m₁

let's calculate

m₂ = (2/1) ² 1

m₂ = 4 kg

4 0

3 years ago

When a high‑energy photon passes near a heavy nucleus, a process known as pair production can occur. As a result, an electron an

shtirl [24]

Answer:

1.47*10^{-8}s

Explanation:

You first calculate the distance traveled by the electron:

$x=vt\\\\x=(0.941(3*10^8m/s))(15.7*10^{-9}s)=4.43m$

Next, you calculate the relative speed as measure by an observer in the positron, of the electron:

$u'=\frac{u+v}{1+\frac{uv}{c^2}}\\\\u'=\frac{0.941c+0.941c}{1+\frac{(0.941)^2c^2}{c^2}}\\\\u'=0.99c$

with this relative velocity you calculate the time:

$t=\frac{x}{u'}\\\\t=\frac{4.43m}{0.99c}=1.47*10^{-8}s$

4 0

4 years ago

In the picture below, the green spheres represent particles of solute that have been added to water. Bonds between the solute pa

frozen [14]

Answer:

As they absorb energy, they are broken.

Explanation

Solutes dissolve when they interact with water. This is because, the attraction of solute particles with each other weakens and become replaced by solute-solvent interaction. As the water surrounds the solute, the solute is now said to be hydrated.

Energy is required to break solute-solute bonds. This energy absorbed in breaking solute-solute bonds is compensated for by the energy liberated when solute particles are hydrated.

If energy required to break solute-solute interaction is less than the energy liberated when solute particles are hydrated, the substance will dissolve in water.

Hence, as a substance dissolve in water, energy is absorbed when solute-solute interactions are broken.

3 0

3 years ago

How does gravity affect the movement of earth and the moon?

ss7ja [257]

Causes friction which slows movement down

7 0

3 years ago