おもしろ実験 はがきの上のコインをコップに入れよう!

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Uploaded by on May 14, 2010

ワオ!科学実験ナビ
http://science.wao.ne.jp

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  • でっていう

  • 摩擦が大きいものだと、出来ません。

    当然と思うが、計算で出すと奥深いかと。

  • ????????????????????????なにがしたい­のかわからんww

  • くだらん投稿やめてください

  • あっそ

    って感じ

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