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Materials:- 1.Pencils 2. rubber bands 3. cardboard box.
Some details about products:- In this activity, The longer length of the rubber band makes a low, long, heavy sound and vibrates at a slower rate of frequency….
Materials:- 1. 2 glasses 2. 1 pencil
Some details about products:- In this activity, the reflection happens because of multiple reflections of light in water.
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