When junior high school students learn the subject of Xi physics, they will encounter a variety of physics problems, some of which are easy and some of which are difficult, some of which can be seen at a glance, and some of which cannot be solved after thinking about it for a long time.
So, when we encounter physics problems that we don't know how to do, how should we think to solve them quickly?
In fact, sometimes you don't know how to do the question, because you don't carefully review the question, you don't have to clear your mind through the question, find the known conditions, the hidden conditions, and even don't see the question clearly.
However, this is not the approach to be said today.
What we are talking about today is not a question of examining the question!
In fact, all junior high school students should develop such a good Xi habit when learning Xi physicsWhatever problem can be solved with a formula, you must try to solve it with a formula, and don't rely only on imagination!
Many junior high school students often suffer the loss of not being able to write a question!They always think about being lazy, thinking that after reading the question and thinking about it, they can come up with the answer!
However, the fact is that many physics problems, if you don't use formula reasoning, will fall into a situation where the conclusion is unfounded, the thinking is not rigorous, the reasoning is one-sided, and the assumption is taken for granted, which eventually leads to doing the wrong question!
For example, the following junior high school physics question:
As soon as this question came out, many junior high school students began to directly rely on imagination to get the answer, some students saw that A heated up slowly, so they one-sidedly thought that A's specific heat capacity was larger than B, more students saw C actually rose by 30, and A only rose by 10, so they took it for granted that C's specific heat capacity was larger, and the result was that C absorbed more heat!
And these one-sided conclusions ignore the quality relationship given in the title!And the key role that quality plays in the formula!
For specific ideas, you can see the answer below.
Through the rigorous reasoning process of the above formula, the answer can be obtained smoothly and quickly!
It can be seen from this that when you encounter a physics problem that cannot be solved smoothly in the future, you must try to see if you can solve it through formulas
More inductions and summaries of physics mistakes in the high school entrance examination are all in the "Physics Mistakes Collection" below, which includes almost all junior high school physics methods, skills, various common mistakes, easy mistakes, and difficult points, including knowledge and method induction, which is very practical and can quickly improve physics scores in a short period of time!
Middle school students, develop a good Xi of rigorous questioning, for a better future, come on!