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16.09.2019 •
Physics
Magnetic forces can be exerted between objects even when the objects are not touching . in the sense , magnetic forces are similar to which type of force? its weight force
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Ответ:
Electrostatic force and force of gravity
Explanation:
Magnetic forces can be exerted between objects even when the objects are not touching - we say that magnetic forces are non-contact forces.
There are several examples of non-contact forces in physics. Two of the most relevant ones are:
- Electrostatic force: it is the force exerted between two charged particles. Its magnitude is given by
where k is the Coulomb's constant, q1 and q2 are the magnitudes of the two charges, and r is the separation between them. The force is repulsive if the charges have the same sign and attractive if they have opposite signs
- Force of gravity: this is the force exerted between any pair of objects with mass, and its magnitude is
where G is the gravitational constant, m1 and m2 are the two masses, and r is the separation between them. This force is always attractive.
Both forces have an infinite range and they act at a distance, so the object do not need to touch in order to experience the force.
Ответ:
electrons can potentially move the entire length of the conductor by means of which they transport the current.