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1995年物理高考题第29题,是一道应用气态方程求解的题目,该题情景创设新颖,不落俗套。是一道既考查知识又考查能力的较好的试题。 [题目]一个质量可不计的活塞将一定量的理想气体封闭在上端开口的直立圆筒形气缸内,活塞上堆放着铁砂,如图1所示,最初活塞搁置在气缸内壁的固定卡环上,气体柱的高度为H_0,压强等于大气压强P_0。现对气体缓慢加热,当气体温度升
The 29th problem of the 1995 Physical Education Examination Question is a problem solved by using the gaseous equation. The scenario is innovative and unconventional. It is a good test that examines both knowledge and ability. [Item] A piston of unacceptable mass encloses a certain amount of ideal gas in an upright cylindrical cylinder with an open upper end. Iron sand is piled on the piston. As shown in Fig. 1, the piston is initially placed on a fixed retaining ring on the inner wall of the cylinder. The height of the gas column is H_0 and the pressure is equal to the atmospheric pressure P_0. Now slowly heating the gas when the gas temperature rises