Give an example of two objects exerting force upon each other without physical contact.How is this possible?
What produces electric and magnetic fields?
Name one practical application of a magnetic field and explain how it works.
Example of two objects exerting force upon each other without physical contact: Two charges placed close to each other can exert a force on each other without physical contact. This is possible through the electromagnetic force, which is a fundamental force that governs the interactions between charged particles.
What produces electric and magnetic fields: Electric fields are produced by electric charges, while magnetic fields are produced by moving electric charges or currents.
One practical application of a magnetic field: Magnetic levitation, or maglev trains, is a practical application of magnetic fields. In this technology, trains are suspended and propelled using magnetic fields to reduce friction and increase speed. Powerful electromagnets installed along the tracks create a magnetic field that repels the magnets on the train, causing it to levitate and move without any physical contact with the tracks.