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1996年高考第25题先给出如图所示的已知条件,气缸底到气缸口的距离为L_0厘米,其内封闭一定质量的理想气体,活塞与缸壁的摩擦可以忽略,活塞到缸口的距离可以忽略。大气压强为H_0厘米汞柱,一个盛有水银的瓶于放在活塞上,活塞下降到某位置平衡,到缸底的距离为L厘米。问:若不是把这瓶水银放在活塞上,而是把瓶内的水银慢慢地倒入活塞上,活塞下移至平衡时,活塞在气缸内的位置及与
The twenty-fifth question of the 1996 college entrance examination gave the known conditions as shown in the figure. The distance from the bottom of the cylinder to the cylinder port is L-0 centimeters. It encloses the ideal gas with a certain mass. The friction between the piston and the cylinder wall can be ignored. The distance from the mouth can be ignored. The atmospheric pressure is H 0 cm Hg. A bottle containing mercury is placed on the piston. The piston is lowered to a certain position and the distance to the bottom of the cylinder is L cm. Question: If instead of putting the bottle of mercury on the piston, slowly pour the mercury from the bottle into the piston. When the piston moves down to equilibrium, the position of the piston in the cylinder and