how are contact forces different from non contact forces ? (any three point)
Answers
A non-contact force is a force which acts on an object without coming physically in contact with it. The m a non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it. ... The force exerted on each bo the distance between them
A non-contact force is a force which acts on an object without coming physically in contact with it.[1] The m a non-contact force is gravity, which confers weight.[2] In contrast a contact force is a force applied to a body by another body that is in contact with it.[2]
All four known fundamental interactions are non-contact forces:[3]
Gravity, the force of attraction that exists among all bodies that have mass. The force exerted on each bo the distance between them.
Electromagnetism is the force that causes the interaction between electrically charged particles; the areas in which this happens are called electromagnetic fields. Examples of this force include: electricity, magnetism, radio waves, microwaves, infrared, visible light, X-rays and gamma rays. Electromagnetism mediates all chemical, biological, electrical and electronic processes.
Strong nuclear force: Unlike gravity and electromagnetism, the strong nuclear force is a short distance force that takes place between fundamental particles within a nucleus. It is charge independent and acts equally between a proton and a proton, a neutron and a neutron, and a proton and a neutron. The strong nuclear force is the strongest force in nature; however, its range is small (acting only over distances of the order of 10−15 m). The strong nuclear force mediates both nuclear fission and fusion reactions.
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