If it's a mechanical wave, then its speed depends on the physical characteristics of the medium.
If it's an electromagnetic wave, then its speed depends on the
electrical characteristics of the medium.
Either way, the properties of the medium determine the wave speed.
You want to change the speed ? You have to change the properties
of the medium.
No, options are given but I believe the answer would be
In a water cycle Solid state of matter has the particles closest together.
Answer:
In a two particle system, the center of mass lies on the center of the line joining the two particles.
<span>Because of the orbit of the earth and the sun and the moon. </span>
