1. which one of the 4 keeps electrons in orbit around the nucleus?
electromagnetic force
weak force
strong force
gravity
2. which is the greatest of the 4 fources
The electromagnetic force keeps electrons in orbit around the nucleus.
The adjective "greatest" is not really appropriate here. One can talk about the range of the force or the interaction strength between particles. Gravity is the weakest of the four forces. It has the largest range because it is not screened.
electromagnetic waves are made by vibrating electric charges and can travel through what ?
1. The force that keeps electrons in orbit around the nucleus is the electromagnetic force. This force is responsible for the attraction between positively charged protons in the nucleus and negatively charged electrons.
To arrive at this answer, you can break down each force and eliminate them one by one:
- The weak force is responsible for certain types of radioactive decay, but it does not directly influence the arrangement of electrons around the nucleus.
- The strong force is the force that holds protons and neutrons together in the nucleus, but it does not directly interact with electrons.
- Gravity is a force of attraction between objects with mass, but its strength is significantly weaker compared to the electromagnetic force at the atomic scale.
Therefore, by process of elimination, we can conclude that the electromagnetic force is the force that keeps electrons in orbit around the nucleus.
2. The greatest of the four forces is the strong force. The strong force is responsible for holding the nucleus of an atom together, overcoming the electrostatic repulsion between positively charged protons. It is also responsible for the binding energy that keeps protons and neutrons tightly bound in the nucleus.
To determine which force is the greatest, we can compare their relative strengths:
- The strong force is the strongest force, around 100 times stronger than the electromagnetic force.
- The electromagnetic force is the next strongest, orders of magnitude stronger than gravity.
- The weak force is much weaker than both the strong and electromagnetic forces.
- Gravity is the weakest force of the four.
Therefore, the strong force is the greatest among the four forces.