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3 years ago

The temperature of the liquid in a container decreases as the liquid evaporates. Use kinetic theory to explain why.

Physics

1 answer:

melisa1 [442]3 years ago

6 0

Answer:

Temperature decreases because the number of collision of the molecules decreases as they escape or evaporate. Molecules are in constant motion. Increase in temperature leads to increase in average kinetic energy of the molecules.

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kherson [118]

Answer:15

Explanation:

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3 years ago

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Mice21 [21]

Answer:

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Explanation:

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3 years ago

Snorkelers breathe through tubes that extend above the surface of the water. In prin- ciple, a snorkeler could go deeper with a

Yanka [14]

Answer:

h = 1.02 m

Explanation:

This is a fluid mechanics exercise, where the pressure is given by

P = $P_{atm}$ + ρ g h

The gauge pressure is

P - $P_{atm}$ = ρ g h

In this case the upper part of the tube we have the atmospheric pressure. and the diver can exert a pressure 10 KPa below the outside pressure, this must be the gauge pressure

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3 years ago

A sphere of uniform density with mass 21 kg and radius 0.8 m is spinning, making one complete revolution every 0.8 s. the center

kompoz [17]

Using the equation;
TE = 1/2mv^2(1+2); where k = 2/5 for a solid sphere; V is the velocity, and m is the mass.
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= 940.8 J
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3 years ago

Rubidium forms the positive ion Rb+. Does this ion have more or fewer electrons than the neutral atom?

ohaa [14]

Answer:

The ion has fewer electrons

Explanation:

As Rubidium forms a positive ion Rb⁺ the number of electrons becomes fewer for the atom.

A positive charge on an ion indicates that the number of protons for the atom is greater than the number of electrons.
This leaves a net positive charge on the atom.
For a negatively charged ion, the number of electrons is more than the number of protons because they have gained additional electrons.
In a neutral atom, the number of protons and electrons are the same.

7 0

3 years ago