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sheng shu ji dan qiao bian bie
Author(s): 
Pages: 102
Year: Issue:  Z2
Journal: School Journal of Mathematics

Keyword:  鸡蛋壳生熟旋转转动结果方法分辨前提结论发现;
Abstract: <正>有两个鸡蛋,一生一熟。在不打破蛋壳的前提下,你能分辨出哪个是生的,哪个是熟的吗?方法一:用同样的力,使这两个鸡蛋在桌子上转动,结果将发现,其中一个鸡蛋要比另一个鸡蛋旋转得快些.结论:旋转快的是熟鸡蛋,旋转慢的是生鸡蛋.方法二:当鸡蛋旋转起来时,用手轻轻地在旋转着的鸡蛋上面按一
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