Answer:
Pushing molecules like a wave.
Explanation:
Answer:
Electrons revolves around the nucleus in a fixed orbits with fixed energy.
electron clouds.
Explanation:
Rutherford in his model of atom explained:
- Maximum space inside the atom is empty.
- Electron revolves around the the center called nucleus.
- Nucleus contains the positive charge.
Bohr's in his model explained that:
- Electrons revolves around the nucleus in a fixed orbit named as shells.
- Each orbits or shells has fixed amount of energy and size.
To solve this problem we will apply the concept related to the electric field defined from the laws of Coulomb. For this purpose we will remember that the electric field is equivalent to the product of the Coulomb constant due to the change of the charge over the squared distance, mathematically this is

Here,
k = Coulomb's constant
r = Distance from center of terminal to point where electric field is to found
q = Excess charge placed on the center of terminal of Van de Graff's generator
Replacing we have that,


Therefore the electric field is 