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3 years ago

Relate the changes in molecular motion of particles as they change from solid to liquid to gas.

Physics

1 answer:

exis [7]3 years ago

8 0

Answer:

As the phase changes occur, the freedom of motion of the particles increases

Explanation:

In thermodynamics the state of matter: solid, liquid and gaseous.

We can characterize them, the solid state maintains a certain shape, which is why particles are tightly bound and can hardly move from their equilibrium positions.

The liquid state does not hold its shape, so the particles have more energy and can move a lot from their equilibrium position.

The gaseous state does not maintain the shape or the volume, so the interaction between the particles is very small, so they can move almost freely.

When examining the answer, the correct one is: As the phase changes occur, the freedom of motion of the particles increases.

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The moon is in a nearly circular orbit of radius r = 384000000 meters

PSYCHO15rus [73]

Answer:

$2.72\cdot 10^{-3} m/s^2$

Explanation:

The centripetal acceleration of an object in circular motion is the acceleration with which the object is attracted towards the center of the circular orbit. Mathematically, it is given by

$a=\frac{v^2}{r}$

where

v is the speed of the object

r is the radius of the orbit

The speed of the object is also given by the ratio between the circumference of the orbit and the orbital period, T:

$v=\frac{2\pi r}{T}$

Substituting into the previous equation, we find a new expression for the centripetal acceleration:

$a=\frac{4\pi^2 r}{T^2}$

In this problem:

- The radius of the orbit of the Moon is

$r = 384000000 m = 3.84\cdot 10^8 m$

- The period of the orbit is

$T=27.32 d \cdot 24\cdot 60\cdot 60 =2.36\cdot 10^6 s$

Therefore, the centripetal acceleration is:

$a=\frac{4\pi^2 (3.84\cdot 10^8)}{(2.36\cdot 10^6)^2}=2.72\cdot 10^{-3} m/s^2$

5 0

3 years ago

Seismic waves are waves that move through the Earth as a result of an earthquake. True or false

gogolik [260]

Answer

True

Explanation.

Some parts of the earth are prompt to earthquakes, volcanic eruptions landslides and magma movements etc. All this may cause energy movements through the earth inform of a wave. These type of waves are called seismic waves.

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4 years ago

Read 2 more answers

Why did John Dalton describe atoms as solid spheres, and did he think all spheres were the same?

Ray Of Light [21]

Go here to get some help now a=can you help me i posted it on your profile

https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-struct...

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4 years ago

A toy car on a string is pulled across a table horizontally. The string is at an

svlad2 [7]

(C)

...........................

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3 years ago

What is one difference between water and ice?

Kaylis [27]

Water atoms move more easily than ice
Ice is in a fixed crystal structure, it obviously has a lower temperature than liquid water, the state does not determine the charge, and when water freezes the crystalline structure actually makes it less dense than liquid because atoms are evenly spaced apart.

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3 years ago

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