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The sound travels from your mouth as sound waves.
The sound waves hit a hard surface (wall, cliff, building).
The waves are reflected back to your ears.
You hear the sound again after a short time – this is an echo.
13/01/2026
Practical demonstrations to concepts in physics, chemistry and other subjects tends to break-down and simplify understanding to it's ABC level for targeted students.
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Practical demonstration convection in water
It's a Monday morning, God we thank you for the gift of life and wellness. This first month of 2026 shall favour us greatly 🙏. Happy new week
Get the steps bit by bit
The size of metal increases due to rise in temperature.
The particles of the metal gain energy and vibrates vigorously.
The force on the weight applied to the string is directly proportional to the stretch of the string.
The concept of the turning effect of a force.
Moment of a force.
Simplified demonstration of gravity and it concept.
Simplified demonstration of gravity and it concept.
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