Can you make the light bulb light?
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Where is the center of gravity for a hammer?
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This is called a Rattleback. It turns in one direction because of the location of its center of gravity.
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You can see the waves made by a vibrating tuning fork.
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What's with this glass rod? I didn't see the fish on the end when it was submerged in the oil.
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What are the forces acting on the can, water, and card that cause the card to stay in place and hold the water in the can?
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You need to hold your hand just like this...
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Hey, this tube plays a tone.
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What's causing the tornado?
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