Julianna blows air into a balloon to inflate it. what can be known about the atoms of the air?
they are close together.
they are moving constantly at high speeds.
they vibrate in place.
they are held together by strong attractions.
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Ответ:
They are moving constantly at high speeds.
Explanation:
Air is in the gas form. In order to understand the behaviour of the molecules in a gas, let's see the difference between solids, liquids and gases:
- solid: in a solid, the molecules are held together by strong molecular bonds. For this reason, molecules in a solid cannot move from their position, but they can only vibrate around their position
- liquid: in a liquid, the molecules are more free to move (they are not held together), however there are still some intermolecular forces that keep them close to each other
- gas: in a gas, the molecules are completely free to move, so they move with random velocities at high speed (their motion is called Brownian motion).
Based on this definition of gas, since air is a gas, we can say that the molecules inside air are moving constantly at high speeds.
Ответ:
Option (b) is the correct answer.
Explanation:
Since, it is known that air is a gas and particles in a gaseous atom move randomly from one place to another. Therefore, particles will have high kinetic energy.
Also, when Julianna blows air into a balloon to inflate it then particles will move more rapidly as force is applied to the particles by blowing air into the balloon.
Thus, we can conclude that it can be known about the atoms of the air that they can be known about the atoms of the air.
Ответ:
If an object is in motion, then the object will stay in motion because the object has inertia
Explanation: