Types of forces: at a distance or through contact (4841)

, por F_y_Q

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Indicate which of these phenomena are produced by forces at a distance and which are produced by forces through contact:

a) The motion of a train due to magnetic levitation.

b) The deformation of a spring when a weight is attached to it.

c) The skidding of a car on a pool of water.

d) The formation of the aurora borealis.

e) The motion of a cupboard when pushed.

P.-S.

Contact forces: b) and e).

Distance forces: a), c) and d).

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