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Lemur [1.5K]
3 years ago
11

I NEED HELP! Plzzzz I will do anything.

Physics
1 answer:
Leno4ka [110]3 years ago
8 0

Answer:

B

Explanation:

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How are ice liquid water and water vapor different from each other?
olga_2 [115]
The molecules of ice stick together in the process of cohesion. They are tightly packed so there isn't much room to move. Liquid water is a looser hold. The molecules can go past one another, and they will take the shape of whatever container they occupy. Water vapor is loosely contained, and it will will fill whatever container it is kept in, and it will take its shape, too.
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3 years ago
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Older railroad tracks in the U.S. are made of 12 m-long pieces of steel. When the tracks are laid, gaps are left between the sec
Shkiper50 [21]

Answer:

0.005 m

Explanation:

length of steel (L°) = 12 m

initial temperature (T) = 16 degrees

expected temperature (T') = 50 degrees

We can find how large the gaps should be if the track is not to buckle when the temperature is as high as 50 degrees from the formula below

ΔL = ∝L°ΔT where

  • ΔL = expansion / gap
  • ∝ = linear expansion coefficient of steel = 12x10^{-6} C^{-1}
  • L° = initial length
  • ΔT = change in temperature

ΔL = 12x10^{-6} x 12 x (50-16) = 0.005 m

3 0
4 years ago
Help needed
MakcuM [25]

Answer: Atmosphere and geosphere.

Geo-sphere is the solid part of the earth. Hydrosphere is the water part. The living things on the earth make up the biosphere. The gases, water vapors etc make up the atmosphere. When a volcanic eruption adds carbon dioxide to the air, the carbon-dioxide is being added from geosphere to the atmosphere. Hence, there is interaction between atmosphere and geosphere.

6 0
4 years ago
Read no.4<br><br> which newtons law is this?<br><br> 1,2 and 3 only
horsena [70]

Explanation:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

8 0
2 years ago
Matter that does not transmit any light.
eduard

Answer:

They all travel at the same speed

Explanation:  the speed of light — in a vacuum, but when they come into contact with matter, they slow down. ... Opaque objects transmit little or no visible light, translucent objects transmit some, and transparent objects transmit almost all, which is why we can see through them.

4 0
3 years ago
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