Sagot :
Answer:
1.inducing in the particles that make up a respective medium a motion perpendicular to the direction of propagation.
2.Rotation of the axles moves the ribbon or tape after each impact and usually aids in maintaining tension along the roughly straight-line path of the medium between the axles. The module may itself include mechanisms that control the tension in the temporarily unwound portion of the medium.
3.in a direction transversal to the direction of propagation of the wave.
4.The motion of the colored ribbon would be in a direction transversal to the direction of propagation of the wave.
Explanation:
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