prove that vibrations carry energy
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Answer:
this is the answer... u have to study it properly..
Answer:
A wave-train consists of a moving series of crests and troughs. Waves travel in straight lines. A wave carries energy from a source to a point some distance away. A wave is reflected by a barrier. The reflected wave moves away from the barrier at an angle that is equal to the angle with which the incoming wave moved towards the barrier. When a wave is slowed down, it refracts—that is, changes direction. Water waves refract when they pass into shallower water. The chapter further discusses the transmission of light and sound. Light energy, transmitted from a source travels in a straight line and is reflected by a mirror, the angles made by the incident light and the reflected light being equal. Sound energy from a source travels in a straight line and is reflected by a wall.