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近年来,中考中的浮力题难度较以前有所下降,但是由于浮力这部分知识对逻辑思维的要求能力较高,对一些基本概念、公式、原理如果理解不透,很容易在解题中出现失误,导致在解题时步入下列误区,出现误解.误区1:没有考虑到排开液体的体积的变化,认为液体的密度越大,产生的浮力也越大.例1(2012年娄底)用一个玻璃瓶装上写有你心愿的纸片,然后盖上盖子并密封,投入江中,就能
In recent years, the difficulty of buoyancy test in the senior high school entrance examination has declined more than before. However, due to the higher ability of buoyancy to ask for logical thinking, some basic concepts, formulas and principles can easily appear in the problem solving Mistakes, resulting in the problem-solving into the following errors, misunderstanding.Matter 1: did not take into account the volume of liquid to open the change that the greater the density of the liquid, the greater the buoyancy.Example 1 (Loudi in 2012) Put on a glass bottle with your wish of the paper, then cover and seal, into the river, you can