Dust particles fall down when we hit the carpet or a piece of cloth with a stick because it loses it inertia of rest and move forward, but dust particles fall down in absence of the carpet.
<h2>
Answer: Indivisible</h2>
Explanation:
<u>The first atomic model was the one proposed by Jhon Dalton</u>, according to which it is postulated that:
<em>"Matter is made up of </em><u><em>indivisible</em></u><em>, indestructible and extremely small particles called atoms." </em>
That is, the<u> atom is a solid and indivisible mass. </u>
<u>
</u>
However, at the end of 19th century the physicist <u>J.J. Thomson began experimenting with cathode ray tubes</u> and found out that<u> atoms contain small subatomic particles with a negative charge</u> (later called electrons).
This means<u> the atom was not indivisible as Dalton proposed.</u> So, Thomson developed in 1904 a new atomic model that was called the <u>raisin pudding atomic model.</u>
<u />
Therefore:
<h2>J. J. Thomson’s experiment disproved the theory that an atom <u>
is indivisible</u></h2>
Applying the concept of scalar product. We know that vectors must be multiplied in their respective corresponding component and then add the magnitude of said multiplications. That is, those corresponding to the component are multiplied with each other, then those corresponding to the component and so on. Finally said product is added.
The scalar product between the two vectors would be:
Therefore the scalar product between this two vectors is 5.74
Answer:
4. nuclear fusion.
Explanation:
The process that helps stars generate heat energy from atomic nuclei is called nuclear fusion. Due to gravity, pressure on the hydrogen gas in the center or core of the stars are enormous causing temperature to reach about 27 million°F (15 million°C). This hotness makes hydrogen atoms to fuse together to form helium atoms. This process is called nuclear fusion. Vast amount of energy is released which enables the star to shine.