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在奥赛训练中,训练思维的严谨性、解题过程的完善性,是训练的内容之一. 例题 两端开口的U形管中注有长为h的水银柱,若将管的右端封闭,被封闭的空气柱长为L,然后使水银柱做微小的振荡,设空气为理想气体,且认为水银振荡时右管中封闭气体经历的是绝热过程,大气压为h_0水银柱,空气的绝热过程满足pV~r=常数,试求水银的振动周期.
In Orsay training, the rigor of training thinking and the completeness of the problem-solving process is one of the contents of the training. The U-shaped tube with openings at both ends of the example is marked with a mercury column of length h. If the right end of the tube is closed, The length of the closed air column is L, and then the mercury column is made to oscillate slightly. Let air be the ideal gas. It is considered that the closed gas in the right tube undergoes an adiabatic process when the mercury oscillates. The atmospheric pressure is the h_0 mercury column and the adiabatic process of the air. To satisfy the pV~r= constant, try to find the vibration period of mercury.