歷年''物理碗''真題下載

Category: 物理國際競賽 Date: 2021年12月8日下午4:51

物理碗學(xué)術(shù)活動難在哪？

與常規(guī)考試不同，學(xué)術(shù)活動題目十分靈活，注重考查學(xué)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(xué)生逐步積累物理學(xué)科素養(yǎng)。?物理碗學(xué)術(shù)活動涵蓋的內(nèi)容非常寬泛，涉及到高中物理所有知識點(diǎn)，以及部分大學(xué)物理內(nèi)容和基本的物理學(xué)常識。考點(diǎn)范圍包括力學(xué)、電磁學(xué)、熱學(xué)、光學(xué)和現(xiàn)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(shù)：

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(yīng)該參加物理碗學(xué)術(shù)活動。

準(zhǔn)備物理碗，如果有專業(yè)的學(xué)術(shù)活動導(dǎo)師進(jìn)行指導(dǎo)，對于快速了解學(xué)術(shù)活動大綱、考試重難點(diǎn)、應(yīng)試技巧，騰出更多時間專注學(xué)術(shù)活動內(nèi)容是非常有幫助的，得獎機(jī)會會更大。

完整版真題下載，掃碼即可免費(fèi)領(lǐng)取歷年物理碗真題~