A non-contact force is defined as a force that acts between two objects that are not physically touching one another. Examples of non-contact forces mentioned include electrostatic force, gravitational force, and magnetic force.
Background: Remember, a force is a push or a pull. Electrostatic force, gravitational force, and magnetic force are all examples of non-contact forces because these forces act between two objects that are not physically touching one other. A magnetic force is experienced by any magnetic material in a magnetic field. All magnets have a magnetic field, which is an area around a magnet where its magnetism affects other objects. Stronger magnets can generally attract magnetic materials from a farther distance than weaker magnets. Opposite magnetic poles North-South or South-North (N - S or S - N) attract each other. Like magnetic poles (N - N or S - S) repel each other. Most magnets are permanent magnets because they cannot be turned off. For example, a refrigerator magnet is a permanent magnet that continuously generates a magnetic field.
Question 1: A force is a push or a pull. How is a non-contact force defined in the information above?
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