[领域] (题目相关领域) 现代物理 [来源] (课本习题、考古题、参考书...) Modern Physics 3rd edition by Serway [题目] 请预估一颗球以0.8m/s在鞋盒内来回滚动,穿过盒子到达外面的机率为多少? Keeping constant speed 0.8m/s, a marble rolls back and forth inside a shoebox. Make an order-of-magnitude estimate of the probability of its escaping through the wall of the box by quantum tunneling. State the quantities you take as data and the values you measure or estimate for them. [瓶颈] (写写自己的想法，方便大家为你解答) 小弟不太知道从何下手 小弟目前想的是以球的动能当成E,然後变可推算在盒内时的k 但是鞋盒如何用位能U来表示,以及穿出鞋盒外的k'就是小弟遇到的瓶颈 (其实小弟也不太确定上面是不是正确的估算方向) 希望各位版上的先进能稍为指点迷津 感激不尽 --

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