阿基米德的跷跷板。

I bet I can tilt the balance of the seesaw without touching the glasses or the seesaw itself, or without changing the amount of water in the glasses.

物理

成绩7 – 12

作者: Stonawski Tamás

审稿人: Dr. Sós Katalin

mozaLink

网页链接

添加到收藏夹中