The child is about to enter the third year of junior high school, and there is no way to do physics,

Physics in junior high school is actually not difficult, but it is very critical, very basic things, I believe you are a very responsible parent, so urge the child to summarize the knowledge points, if possible, prepare some simple props for him, you can let him do experiments, this is the most effective method, the most important thing is to do more questions, practice, will not solve the problem in time, do not delay, I hope that with the joint efforts of you, teachers and children, your child's learning is thriving!!

Listen carefully and take good notes, physics is a simple matter of addition, subtraction, multiplication and division.

You can ask a one-on-one teacher to tutor him, which may be more effective.

Answer each question to make sure you understand every question.

In fact, physics is not difficult to learn, first of all, it is necessary to give children confidence. Help him understand the basic knowledge, and then do more exercises, first do the basic questions, and then do the improvement questions, so that there will be gains.

The first thing is to love physics, practice more to improve his interest in physics, you can buy him some instruments, let him do more analysis, more analysis will be done in the future...

Listen well in class, connect physics with life, do more questions, physics is not difficult, don't let children have a fear of physics.

First sort out all the basic knowledge, and then do the questions in a targeted manner.

Read more books, do more questions, and science questions are king!

You need to understand more and do more questions.

Physics in the third year of junior high school is relatively added to electricity, which increases the difficulty on the basis of the second year of junior high school, but the knowledge is interlocking.

1) Memorize the formulas, and make the title of the chapter that mentions it will naturally reflect all the formulas in the chapter. This will help you feel the right thing and build confidence in your problem-solving.

2) Use it flexibly to learn physics (I think we should start with concepts).This will help you find a breakthrough quickly. You can read more about physics, physical phenomena in life.

3) Learn to review. Make regular summaries so that what you have learned is not easy to forget. And the third year of junior high school is a melting pot, and the final high school entrance examination is to test the comprehensive strength of students.

4) Practice more. To lay a solid foundation, the comprehensive questions are practiced in chapters, no difficulty, do not ask for difficulty, do some classic physics high school entrance examination finale questions, remember not to look at the master or cower in difficulty, to have perseverance and perseverance, if you really don't want to learn to seek help from the teacher.

Choose D, because it floats, so buoyancy = gravity, that is, p liquid * g * v row = g1, let the bottom area of the wooden block be s, then the volume is sh and bring in 1.

p liquid * g * sh = g, p liquid * h = g s g (the right is the fixed value) (the larger p, the smaller h) xy=a is an inverse proportional function, so d is chosen

I just graduated from junior high school.

The answer is d

The greater the density, the greater the buoyancy of the object, and the object will float

You don't even need to calculate ==

c does not explain.