PHYSICS
1.MEASUREMENT OF DENSITY
2.ARCHIMEDAS' PRINCIPLE
3.REFLECTION OF SOUND
4.VELOCITY OF PULSE
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measure of density = mass/ volume
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1. density = mass/volume
2. Archimedes principle state that when the body is dipped partially or deeply into the water then there is an upward force acting on it which is equal to the weight displaced by the body.
3. when the sound strike the surface it bounces off . this phenomenon is known as reflections of sound
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