全国大学生物理学术竞赛题目

1. Adhesive tape有粘性的带子

Determine the force necessary to remove a piece of adhesive tape from a horizontal surface. Investigate the influence of relevant parameters.

决定将一块胶带从水平表面上拿下来需要的力。研究其中的有关参数。

2. Air drying 在空气中干燥

Table utensils (dishes, cutlery, etc.), after being washed, dry differently. Investigate how the time of drying depends on relevant parameters.

桌上的餐具在洗完后，变干的情况不同，研究其中的有关参数。

3. Bouncing flame 跳跃的火焰

Place a flame (e.g. from a Bunsen burner) between two charged parallel metal plates. Investigate the motion of the flame.

在本生灯中点燃一团火焰置于两片带电、平行的金属板。观察火焰的运动情况。

4. Breaking spaghetti 断开的面条

Find the conditions under which dry spaghetti falling on a hard floor does not break.

找出干燥的面条在掉落坚硬地板后不断裂的情况。

5. Car 小车

Build a model car powered by an engine using an elastic air-filled toy-balloon as the energy source. Determine how the distance travelled by the car depends on relevant parameters and maximize the efficiency of the car.

制作一个模型车，以有弹性的充气玩具气球作为动力源。找出决定小车运动距离的相关参数并求出小车能运动的最大距离。

6. Convection 对流

In a container filled with a liquid, heat transport will occur when the bottom of the container is heated and the top surface is cooled. How does the phenomenon change when the container rotates about its vertical axis?

在一个充满液体的容器中会发生热传递（当底部被加热而顶部被冷却）。如果容器绕垂直轴旋转，这个现象会发生什么变化呢？

7. Cup drum 杯制鼓

A plastic cup is held upside-down and tapped on its base. Investigate the sound produced when the open end of the cup is above, on or below a water surface.

把一个塑料杯倒置并轻敲它的底部，研究当杯子的开口在水面上方和下方时的发声情况。

8. Domino amplifier多米诺放大器

A row of dominoes falling in sequence after the first is displaced is a well known phenomenon. If a row of "dominoes" gradually increases in height, investigate how the energy transfer takes place and determine any limitations to the size of the dominoes.

当第一块被移动时，一排多米诺骨牌按顺序倒下，这就是著名的多米诺效应。当一排“骨牌”被渐渐抬高，研究能量转移是如何发生的并确定“骨牌”的尺寸限制。

9. Escaping powder 逃脱的粉末

When a hot wire is plunged into a beaker of water with powder (e.g. lycopodium) floating on the surface, the powder moves rapidly. Investigate the parameters that alter the speed of movement of the powder.

当一根炙热的金属丝被插入一杯表面上漂浮着粉末的水时，粉末会迅速的移动.。研究会改变粉末移动速度的参数。

10. Faraday heaping 法拉第堆瓦解

When a container filled with small spheres (e.g. mustard seeds) is vibrated vertically with a frequency between 1 – 10 Hz, so called Faraday heaping occurs. Explore this phenomenon.

当一个装有一些小球的的容器在1到10赫兹的频率范围内上下垂直振动，就被称为法拉第堆瓦解发生了。探究这个现象。

11. Fingerprints 指印

Fill a glass with a liquid and hold it in your hands. If you look from above at the inner walls of the glass, you will notice that the only thing visible through the walls is a very bright and clear image of patterns on your fingertips. Study and explain this phenomenon.

在杯子中装满水并用手拿住杯子。如果你从上方看玻璃的内壁，你会发现你只能透过玻璃看到非常亮儿清晰的指纹。研究并解释这个现象。

12. Levitating spinner 旋转漂浮