SOUND WAVES
What is charge ? (atomic discussion)
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. Electric charge can be positive or negative.
Pitch of sound with Homeopathy / plastic bottle / U - tube
The faster an object vibrates, the higher the pitch of the sound. The length and thickness of the vibrating object also affects its pitch.
Introduction (Paper peepdi - argon pipe / straw / slinky)
Slinky coil can be used to demonstrate longitudinal wave. In longitudinal wave, the direction of the wave is parallel to the direction of the vibration of the particle.
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