Atoms don't fly apart due to electrical repulsion because of the strong nuclear force that holds the protons and neutrons together in the nucleus. This force is much stronger than the electrical repulsion between the positively charged protons in the nucleus. Additionally, the electrons surrounding the nucleus are attracted to the positively charged protons, creating a balance of forces that keeps the atom stable. Overall, the combination of the strong nuclear force and the attraction between electrons and protons overcomes the electrical repulsion, preventing atoms from flying apart. **

The electron pair repulsion model is based on two assumptions: first, that electron pairs in the valence shell of an atom repel each other and will arrange themselves in a way that minimizes this repulsion. Second, the model assumes that the repulsion between different pairs of electrons follows a specific order of strength, with lone pair-lone pair repulsions being the strongest, followed by lone pair-bond pair and bond pair-bond pair repulsions. These assumptions help to predict the geometry of molecules based on the arrangement of electron pairs around the central atom. **

The attraction or repulsion between electrically charged bodies is described by Coulomb's Law. This law states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. If the charges are of the same sign, they will repel each other, while opposite charges will attract. The strength of the force depends on the magnitude of the charges and the distance between them. **

Electromagnetism plays a crucial role in the attraction and repulsion of current in physics. When an electric current flows through a conductor, it creates a magnetic field around it. This magnetic field can interact with other magnetic fields, causing attraction or repulsion between the currents. The direction of the current and the orientation of the magnetic fields determine the nature of the interaction. This phenomenon is fundamental to the operation of electric motors, generators, and various other electrical devices. **

Yes, the repulsion of like charges is dependent on the strength of the charge. According to Coulomb's law, the force between two like charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. This means that the greater the strength of the charges, the greater the repulsion force between them. Therefore, the strength of the charge does play a significant role in determining the repulsion between like charges. **

Yes, the repulsion of like charges does depend on the strength of the charge. The greater the charge of the particles, the stronger the repulsion between them. This is because the force of repulsion between like charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them, as described by Coulomb's Law. Therefore, the strength of the charge plays a significant role in determining the magnitude of the repulsive force between like charges. **

Full-face helmets provide more protection for the face and jaw in the event of a crash, making them better for more aggressive and high-speed cycling such as downhill mountain biking or BMX racing. However, for general cycling, half-shell helmets are often preferred due to their lighter weight, better ventilation, and less restrictive feel. The choice between the two depends on the type of cycling and the level of risk involved. **

Yes, it is necessary to have bicycle helmets. Wearing a helmet while riding a bicycle can significantly reduce the risk of head injury in the event of a crash or fall. Helmets provide crucial protection for the brain and skull, and can potentially save lives. It is important for both children and adults to wear helmets while cycling to ensure their safety on the road. **