如何備賽物理碗沖獎(jiǎng)？物理碗競(jìng)賽真題和答案免費(fèi)領(lǐng)

如何備賽物理碗沖獎(jiǎng)?

準(zhǔn)備物理競(jìng)賽的最好方法是參加模擬考試，在競(jìng)賽之前，測(cè)試自己的水平。

在練習(xí)的時(shí)候，最好是坐下來(lái)考試，花45分鐘的時(shí)間來(lái)體驗(yàn)真實(shí)的考試氛圍，提前適應(yīng)競(jìng)賽。

物理碗例題

以下是一些來(lái)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(lái)其中的一些問(wèn)題，是一個(gè)很好的跡象，表明你應(yīng)該參加物理碗競(jìng)賽。

距離競(jìng)賽開(kāi)始還有4個(gè)月的時(shí)間，同學(xué)們應(yīng)該好好規(guī)劃一下自己的備考安排：

2022年11月：系統(tǒng)學(xué)習(xí)知識(shí)點(diǎn)

2022年12月-2023年1月：查缺補(bǔ)漏，重點(diǎn)突破

2023年2月-2023年3月：全真?？迹袥_刺

物理碗競(jìng)賽時(shí)間緊、題量大，對(duì)學(xué)生的知識(shí)應(yīng)用能力和解題反應(yīng)速度要求都非常高，這就需要大家充分利用真題來(lái)積累考試技巧和應(yīng)對(duì)策略，提升解題速度和做題技巧是贏得物理競(jìng)賽的關(guān)鍵。

輔導(dǎo)名師：董老師

物理碗競(jìng)賽考試時(shí)間為2023年3月25日，由于競(jìng)賽試題的高難度，建議大家至少提前半年進(jìn)行備考。

備考初期，針對(duì)競(jìng)賽的考點(diǎn)內(nèi)容進(jìn)行有針對(duì)性的提升，建立系統(tǒng)完備的物理競(jìng)賽知識(shí)體系。

物理碗競(jìng)賽對(duì)答題速度有較高要求，因此備考過(guò)程中快速計(jì)算能力也是需要練習(xí)的重點(diǎn)。

備考中后期可以按照年份開(kāi)始刷真題，熟悉競(jìng)賽題型與風(fēng)格，積累解題技巧，提升答題速度。除此以外，也可以按照考點(diǎn)或題型進(jìn)行分類刷題，有針對(duì)性的提升薄弱環(huán)節(jié)，不斷查漏補(bǔ)缺。

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