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CUPT 17 道题目
4.攀爬磁铁 (Climbing Magnets)
Attach a rod assembled from cylindrical neodymium magnets horizontally to a vertical ferromagnetic rod. Limit the motion of the magnets to the vertical direction. When the ferromagnetic rod is spun around its axis of symmetry, the magnetic rod begins to climb up. Explain this phenomenon and investigate how the rate of climbing depends on relevant parameters.
将一个由圆柱形钕铁硼磁铁组成的杆水平地附着在垂直的铁磁杆上。限制磁铁的运动方向为 垂直方向。当铁磁杆绕其对称轴旋转时，磁杆开始向上攀爬。解释这一现象并研究攀爬速率 如何取决于相关参数。
6. 滴水龙头 (Dripping Faucet)
A leaky faucet develops interesting dripping patterns, where the time between drops depends on the water flowrate. Investigate this phenomenon and study how it depends on relevant parameters.
漏水的水龙头会形成有趣的滴水模式，其中水滴之间的时间间隔取决于流量。研究这一现象并研究它如何取决于相关参数。
8.悬浮液体 (Levitating Fluid )
When a container partially filled with liquid is oscillated vertically and air is injected at the bottom of the container, the fluid can “levitate”. Investigate the phenomenon.
When a container partially filled with liquid is oscillated vertically and air is injected at the bottom of the container, the fluid can “levitate”. Investigate the phenomenon.
9. 磁力辅助 ( Magnetic Assist)
Attach one or two magnets to a non-magnetic and non-conductive base such that they attract a magnet suspended from a string. Investigate how the motion of the moving magnet depends on relevant parameters.
将一个或两个磁铁附着在非磁性且非导电的基座上，以便它们吸引一个通过绳子悬挂的磁 铁。研究移动磁铁的运动如何取决于相关参数。
10.瑞利 - 贝纳德对流 (瑞利 - 贝纳德对流)
Uniformly and gently heat the bottom of a container containing a suspension of powder in oil (e.g. mica powder in silicon oil), cell-like structures may form. Explain and investigate this phenomenon.
均匀且温和地加热装有油中有悬浮粉末（如硅油中的云母粉）的容器底部，可能会形成类似细胞的结构。解释并研究这一现象。