Theory on sound.
“Sound is not a merely form of vibrations in the air. Many of them think that sound is a form of vibrations. But no one thinks how these vibrations are caused. These vibrations are caused by the following factors:-
The sounds (vibrations) of a body are caused by:-
1. The shape of the object.
2. The mass of the object.
3. The force acting on that object.
4. The surface it is caused.
5. The effect it causes before producing the vibrations.
6. The vibration of particles after the effect.
7. Mode of the medium.
8. Law of conservation of momentum.
Sound is always caused by the interaction of 2 objects. No sound can produced without the interaction of 2 objects.
Square constant – Any even number greater than4 is the side of the square.
If the perimeter and the area are calculated, then the perimeter is subtracted by the area and the result got will be always a multiple of 4.
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Here is a square of side of 12 cm. Area= 12 * 12 = 144
Perimeter =12 * 4= 48
144- 48 = 96 and 96 is a multiple of 4.
Therefore, any even number greater than4 is the side of the square. If the perimeter and the area are calculated, then the perimeter is subtracted by the area and the result got will be always a multiple of 4.