I have learned physics and mechanics, and I have learned physics knowledge and knowledge, and I have

From the condition of the balance of two forces, it can be seen that when two people are wrestling their wrists, although the two forces applied are in opposite directions and are in the same straight line, the magnitude of the two forces is not equal, so the two forces are not balanced forces, and there will be wins and losses. It has nothing to do with what you said above.

This is equivalent to a lever, your elbow is a fulcrum, on one side is your muscle contraction to produce force, reflected in your wrist, when the wrist is wrenched, the force is indeed the same, but the force that each person's muscles can provide is different, the force provided by themselves is smaller than others, then it will naturally fall to one side.

Child, you don't drill the tip of the horns, In real life, various factors are too complex, your problem can be understood in this way, the human skeleton quality is different, when wrenching the wrist, you give others the force, others can bear it, but the force that others give you, you may not be able to bear it, just like you hit the wall harder, the harder you work, the more it hurts. ok

I think it's because the leverage of the arm transmits the force to your elbow and upper arm, and the elbow and upper arm can't withstand this force because the strength is relatively small, so it will drive the arm to trip down.

Personal opinions, corrections are welcome!

If we wrestle our wrists and I'm stronger than yours, then if I use 10n and you only have 5 N, then the force imbalance will cause acceleration, and it will move in the direction of my force, and after moving a certain distance, to put it bluntly, I won.

If there is anything else you don't understand, you can ask Welcome to ask Hey.

The two hands are a whole, my force is greater than yours, your force can't offset my force, the direction of the resultant force is to you, don't make a mistake about the "whole".

First of all, we must figure out what the conditions for the application of the formula are, otherwise we will end up wrong in the end. Then, if you want to understand the idea of formulas, you must understand them, and you must not memorize them by rote, because using the methods of liberal arts to study science is a dead end.

Then through the exercise training, this is very important, the exercise is the gymnastics of physics, must be practiced, only do enough exercises to analyze and solve the ability to improve, I am a physics major in both undergraduate and graduate students have a deep feeling for this. In general, the physical process described in the calculation question is not thoroughly analyzed, and the essence cannot be seen. Don't rush to find the answer to the problem, first figure out the physical process, and then use what you should use.

The basis of physics is mechanics, and the basis of mechanics is force analysis. There are generally three states of physics comprehension questions in middle school:

1.I can't understand the questions, I don't know what to test.

2.If you look at it, you will be wrong. 3.

You can basically get it right. If it's 1, then you have to calm down and start over and learn again, many questions you think are simple, as if you understand, but in fact, you don't understand. If it's 2, increase the amount of exercises.

After completing a question, spend a minute or two to pass this question, first of all, I want to test the knowledge points, and then I will figure out the ideas, and then see if there is any problem in the calculation. Solve the problem in this way for a few months to ensure that you have a qualitative improvement.

Good luck with your progress.

The main reason may be that the formula is not remembered very accurately, or the unit or something is not accurate enough. The rest is a matter of calculation.

101kpa is absolute pressure (absolute); 2kpa is the gauge pressure.

The zero position chosen for absolute pressure is an absolute vacuum; The zero of the gauge pressure is the current atmospheric pressure.

The pressure gauge on the gas pipeline (from the diaphragm pressure gauge) measures the gauge pressure value, that is to say, the pressure in the diaphragm box inside the meter is higher than the current atmospheric pressure.

Of course, the 101kPa you are talking about, to measure this pressure, you need another instrument that can measure the absolute pressure. For example: empty box barometer, absolute pressure gauge, etc.

Also, Why doesn't atmospheric pressure deflate gas pipes? Because the pressure inside the pipe is 103kPa and the pressure outside the pipe is 101kPa, the pipe wall is actually only subject to 2kPa pressure (pressure difference). Hehe, as far as I know, the general gas pipeline is made of steel, and this kind of material, if you want to deflat, the pressure needs at least tens of MPa (10 atmospheres is approximately equal to 1MPa).

The pressure gauge is made to take this situation into account, the pressure measured by the pressure gauge is based on the atmospheric pressure, you should know the coordinates, the atmospheric pressure on the pressure gauge is equivalent to the origin, and the gas pipeline is not willing to have a little air, in fact, there is also atmospheric pressure inside.

Hehe, you're really miscellaneous, your pressure gauge is the same inside and out, right? The inner and outer atmospheric pressure is balanced, and the middle of the barometer should be vacuum.

If the pressure gauge measures gauge pressure, it is 0 in the atmosphere

2k<101k squash is right.

Yes, the pressure of that tube is about 2kpa above the atmospheric pressure. So it's fine.

There are two things to pay attention to:

First, in the process of learning physics, we should be more connected with the reality of life and natural phenomena.

Second, in the process of learning physics, we should learn to be good at applying mathematical knowledge to help learn physics. This allows for simultaneous progress in physics and mathematics.

Force is the action of an object on an object, or force is the interaction between objects.

Answer: Force: The action of an object on an object. Symbol: f

1.The force is mutual, and an object is the object of force and the object of force.

2.Effect of force: Force can change the shape of an object.

Force can change the state of motion of an object (fast or slow motion + direction of motion) and I hope it can help you. Good luck with your studies (*.)

The interaction between objects is called "force".

Force cannot exist apart from an object.

Force is the interaction between objects.

Force – the result of the interaction between objects! There is also a psychological force! Everything in the world is powerful!

Force is the interaction of an object with an object. Therefore, there must be at least two objects for force.

Force is an objectively existing phenomenon.

If you don't understand, please ask, and if you understand, please adopt it in time! (*

The interaction between objects is called "force".

There are action and reaction forces, balance forces, friction forces, elastic forces, gravity forces, etc.

Force is the action of an object on an object, and it is only an object that exerts a force on another object.

Force refers to the action of an object on an object. Force can be divided into gravity, support force, friction force, gravitational force, Coulomb force, tensile force, etc., and according to the effect, it can be divided into power, resistance, etc. It's common sense

The force referred to in physics is the interaction between objects. Interaction is when the motion of one object changes due to the presence of other objects. Powerful, for example, people.

The interaction between objects is called force, and I don't understand what it means to be forceful, so I say that any object has a force.