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Needs a medium to travel through. Energy is needed to create a disturbance in the elastic medium. Used in models for waves you cannot see. EX) water waves, sound, rope wave.
The displacement of particles in the medium is perpendicular to the direction of wave motion.
The displacement of particles of the medium is parallel to the direction of wave motion. EX) sound
Don't need a medium. Travel through vacuums at the speed of light. EX) light, x-ray, radio.
The maximum displacement of a particle of the medium from the equilibrium point. Does not depend on speed.
The shortest distance between two points on a wave that are "in phase." Consists of troughs and crests. Equal to velocity/frequency.
The shortest time interval during which the motion of a wave repeats itself. Does not depend on the speed or medium, but only the wave source. Indicated by the letter T.
The number of waves per unit of time. Equal to 1/period. Does not depend on speed or medium, only the source of the wave.
What does the speed of a mechanical wave depend upon?
Properties of medium, not amplitude or frequency.
A returning wave that results from the nervy from an incident wave being reflected back.
If 2 waves exist in the same phase in a medium at the same time, they affect the medium independently. The displacement of the medium is the sum of the individual displacements.
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