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Ede4ka [16]
3 years ago
8

Explain melting and freezing using the kinetic theory of matter​

Physics
2 answers:
lapo4ka [179]3 years ago
7 0

QUESTION:

Explain melting and freezing using the kinetic theory of matter.

ANSWER:

As a liquid is cooled its molecules lose kinetic energy and their motion slows. When they’ve slowed to where intermolecular attractive forces exceed the collisional forces from random motion, then a phase transition from liquid to solid state takes place and the material freezes. These attractive forces can be any of several types:

  • Covalent.
  • Hydrogen (polar).
  • Ionic.
  • Van der Waals.
yulyashka [42]3 years ago
6 0

The temperature of solid which melts and turned into liquid when heat is applied is called melting.

The temperature of a liquid which becomes a solid at normal atmosphereic pressure is called freezing .

hope it is helpful to you ☺️☺️☺️

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Determine the stopping distances for a car with an initial speed of 88 km/h and human reaction time of 2.0 s for the following a
seropon [69]

Explanation:

Given that,

Initial speed of the car, u = 88 km/h = 24.44 m/s

Reaction time, t = 2 s

Distance covered during this time, d=24.44\times 2=48.88\ m

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We need to find the stopping distance, v = 0. It can be calculated using the third equation of motion as :

s=\dfrac{v^2-u^2}{2a}

s=\dfrac{-(24.44)^2}{2\times -4}

s = 74.66 meters

s = 74.66 + 48.88 = 123.54 meters

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s=\dfrac{v^2-u^2}{2a}

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s = 37.33 meters

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4 0
3 years ago
How much work must be done to bring three electrons from a great distance apart to 5.0×10^−10 m from one another (at the corners
Inessa05 [86]

Answer:

1.38 x 10^-18 J

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U =3\times \frac{Kq^{2}}{d}

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By substituting the values

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3 years ago
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We know, Potential Energy = Force * Height
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Hope this helps!
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