2010物理辯論討論 (教師: 賈 至達 許 世龍)
登入
主題大綱-1-10 11-17 : 全部 1-17

點選課程每個區段左邊可以寫下個人針對該區段的筆記,點選課程資源連結時,網頁上方連結後也有相同圖案,可以註記針對該資源的筆記.若點選本網頁上方圖案則可記錄針對本課程的筆記. 歡迎多加利用!
(0)
課程公告區


(11)
Problem 11.

Problem 11. Sand   

Dry sand is rather ‘soft' to walk on when compared to damp sand. However sand containing a significant amount of water becomes soft again. Investigate the parameters that affect the softness of sand.




(12)
Problem 12.

Problem 12. Wet towels   

When a wet towel is flicked, it may create a cracking sound like a whip. Investigate the effect. Why does a wet towel crack louder than a dry one?




(13)
Problem 13.

Problem 13. Shrieking rod   

A metal rod is held between two fingers and hit. Investigate how the sound produced depends on the position of holding and hitting the rod?




(14)
Problem 14.

Problem 14. Magnetic spring   

Two magnets are arranged on top of each other such that one of them is fixed and the other one can move vertically. Investigate oscillations of the magnet.

 



(15)
Problem 15.

Probelm 15. Paper anemometer   

When thin strips of paper are placed in an air flow, a noise may be heard. Investigate how the velocity of the air flow can be deduced from this noise?




(16)
Problem 16,

Problem 16. Rotating  spring   

A helical spring is rotated about one of its ends around a vertical axis. Investigate the expansion of the spring with and without an additional mass attached to its free end.




(17)
Problem 17.

Problem 17. Kelvin's  dropper   

Construct Kelvin's dropper. Measure the highest voltage it can produce. Investigate its dependence on relevant parameters.





尚未登入. (登入)

since 2011/06/20 18:23