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One end of a glass tube with uniform thickness is opened. When placed horizontally, there is a 25cm long mercury column enclosing a 40cm long air column. If the glass tube is opened upward,
It's the same.
As shown in the figure, a certain mass of air is enclosed by mercury in a U-shaped glass tube which is still placed in a vertical plane, the upper end of the right tube is open and long enough, and the right tube The internal silver surface is higher than the internal silver surface of the left tube by h, which can make h larger. Answer: Ambient temperature rises I'm going to say that when the temperature of the gas increases and the volume of the gas increases because of the expansion and contraction of the heat and the contraction of the gas, and the pressure does n' t change (according to the formula P=KTN/V), then h should decrease! The atmospheric pressure will increase as the ambient temperature increases or? Give me an explanation.
Because of the right opening, P = P atmosphere + Ph in the left seal cavity
If you want h to increase, that is, the left V increases, that is, the left P increases
According to the formula, if P on the left side of the formula increases, and the denominator on the right side of the formula increases, K remains unchanged, and N remains unchanged, then the formula can be constant only when T increases, and the trend of T increasing is greater than that of V increasing.
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