歷年''物理碗''真題下載

物理碗學術活動難在哪？

與常規考試不同，學術活動題目十分靈活，注重考查學生的分析能力和物理思維，并不注重對計算能力和解題套路的考查，需要學生逐步積累物理學科素養。?物理碗學術活動涵蓋的內容非常寬泛，涉及到高中物理所有知識點，以及部分大學物理內容和基本的物理學常識。考點范圍包括力學、電磁學、熱學、光學和現代物理。

物理碗部分例題：

以下是一些來自物理碗Division I考試的各種樣題，其中一些包括方程或常數：

8.) A candle, a converging lens and a white screen are placed in a line with the lens between the candle and the screen. A distance of 72 cm separates the candle and screen. As the lens is moved to all points between the candle and the screen, only one focused image of the candle can be made on the screen. What is the focal length of the converging lens?
(A) 12 cm (B) 18 cm (C) 24 cm (D) 36 cm (E) It cannot be determined without knowing the location of the lens when the focused image is produced.

35.) In a mixture of hydrogen, oxygen, and nitrogen gases at room temperature, the molecules having the greatest average speed are those of？
(A) Hydrogen (B) Oxygen (C) Nitrogen (D) All have the same speed (E) It depends upon the composition of the mixture
Here are some various example questions from the Division III exam, some of which include equations or constants:

44.) Consider a traveling wave on a string of length L, mass M, and tension T. A standing wave is set up. Which of the following is true?
(A) The wave velocity depends on M, L, T. (B) The wavelength of the wave is proportional to the frequency. (C) The velocity of a given particle in the string is equal to the wave velocity. (D) The wavelength is proportional to T. (E) The frequency depends upon L.

49.) A lump of clay whose rest mass is 4.0 kg is traveling at three-fifths of the speed of light when it collides head-on with an identical lump going in the opposite direction at the same speed. If the two lumps stick together and no energy is radiated away, what is the mass of the composite lump?
(A) 4.0 kg (B) 6.4 kg (C) 8.0 kg (D) 10.0 kg (E) 13.3 kg

如果能回答上來其中的一些問題，是一個很好的跡象，表明你應該參加物理碗學術活動。

準備物理碗，如果有專業的學術活動導師進行指導，對于快速了解學術活動大綱、考試重難點、應試技巧，騰出更多時間專注學術活動內容是非常有幫助的，得獎機會會更大。

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