Junior high school physics formula jingle

Junior high school physics formula is as follows:

The balance swims to the left, and the surface of the measuring cylinder looks at the bottom; The pressure gauge reads the height difference, and the densimeter marks the multiple; According to the law of convex lens imaging, the first focal length is divided into virtual reality, the second focal length is divided into size, and the second focal length is divided into object image. The power supply seems to supply power, pushing the charge to the positive electrode, and there is a voltage between the positive and negative electrodes, and the circuit is connected, which shifts the charge.

Ampere rule is used to judge the magnetic induction line around the conductor, and the straight line is judged by rule 1. Let the right hand hold the conductor straight, the thumb refers to the current direction, and the four fingers refer to the magnetic induction line. The second rule is to judge the spiral, let the right hand hold the solenoid, the current direction is four fingers, and the N pole is at the end pointed by the thumb.

Content introduction

Physics is a natural science course that is difficult to learn. You can't learn by rote. You can recite it word for word, but you still can't do the problem. So, how to learn physics well? If you want to learn physics well, you should not only learn physics well, but also learn other courses, such as mathematics, chemistry, Chinese and history, which means you must learn what you learn.

In fact, in school, good students do well in all subjects, while poor students do badly in all subjects. That's basically it. In addition to the innate factors of small probability, there is indeed a problem of learning methods here.

Who doesn't want to be a good student, but if you want to be a really good student, the first thing is to study hard, that is, to dare to endure hardships, cherish time and study tirelessly. Establish confidence, firmly believe that you can learn any course well, firmly believe in the "law of conservation of energy transformation", and firmly believe that you should get several times if you pay a few times.