The question of where the work is going In the tangle, the tangled construction work goes

After the right, the object has velocity, and the work done by the right hand is converted into kinetic energy.

As long as you move, your muscles have to use energy.

.The muscles of the retreating car are in contraction and relaxation, and they consume the same energy. You push the wall of your house, you push it desperately, although the wall doesn't understand, but your muscles are contracting and relaxing. Still need energy.

As long as you move, you will consume energy!!

You first analyze the object, the object moves to the right, the left hand does the work, and the energy is converted into the kinetic energy of the object and the energy consumed by the friction between the object and the air. The neutralization of the static friction between the left hand and the object in the vertical direction also consumes energy, and similarly, the muscles of the right hand also consume energy.

Any object that changes its state, both macroscopic and microscopic, consumes energy. The energy expended** is exchanged for its own or external energy, and the energy is transmitted in one direction.

Such a simple question!! If you don't use your right hand, you can still use your left hand! If both hands are at the same time, the right hand does negative work and the left hand does positive work, the sum of positive and negative work is equal to the increased kinetic energy of the object. That is to say, the left and right hands do work to cancel.

Neither hand did work. The key is the distance moved, the movement is relative, and the hand does not move the distance relative to the body. This is like a person pushing a big box on a walking train, but he doesn't push it, can a person do work?

In high school physics, the definition of work is force, and there is a displacement in the direction of the force, then this force does work, as you said, it must be the left hand to do positive work, the right hand to do negative work, this is just our isolation method, if the motion is a constant speed, then the net force of the left and right hands to the object is 0, then the left and right hands do not do work on the object. If you still want to know where the energy of the muscles goes, it is very complicated, the energy transformation in the human body is very complicated, but one thing is certain, energy is conserved, it can neither be generated nor destroyed, it can only be transformed from one form of energy to another!

The work of the left hand is converted into the kinetic energy of the object, and the muscles of the hand also do work in order to resist gravity, which is lost in the form of heat.

First of all, the concept of work: the work done by an object in the direction of force, without much thought, first calculate the static friction force f and the elastic force f"And then you can calculate the distance that the object moves in that direction, using some trigonometric functions.

Because there is no acceleration at relative rest, the elastic force is the support force.

Find a way to perform well at work and let everyone know that you are irreplaceable, and then talk about a salary increase. No boss is stupid.

3000 is less! Not content! I'm 2000, 12 hours, this year, if you have the strength, jump it! The salary is a year old, and it is not just a year old that you can earn 5000

What I'm trying to say is; In fact, it's the same everywhere, just be happy.

In fact, what I want to say is that mentality is very important, you are not satisfied with the number 3000 at the beginning, how can you do good deeds in such a mentality?

People should first know how to be content, in order to learn to be motivated, no matter at all times, they must maintain a normal mind and not be impatient.

Education does not mean anything, there are many factors that affect a person's life, adjust your mentality, it is not easy to do work anywhere, because this society is like this! As for the leadership or something, don't worry about it, if I am you, do your duty first, let others have nothing to say, find a suitable job in the dark, and jump when you meet a satisfactory one, but you have to adjust your mentality wherever you are, don't worry, step by step to stand firm!

Believe in yourself! It's gold that always shines! We want to be a strong faction!!

Do you think money is more important or family is more important? Generally speaking, men think that earning a lot of money can bring happiness to women, but women generally don't think so. And what's your relationship with your current girlfriend really like?

Do you really love each other and decide to spend your life together? If yes, then I think you can go to your girlfriend, or you can discuss it. Anytime money is enough, it's spent.

But marriage is for life.

Choose between one and two. Because the rest is unknown. Now find a stable one. Good luck in your work.

It's best to stay where you work now, the main reason is that there are five insurances and one housing fund, I think the role of five insurances and one housing fund does not need me to say more, it will definitely be of great help to your future life, which will help you a lot after retirement, although Jining is poor, but the people are good, as for the girlfriend, you can negotiate.

Two of them, one: In the place where you are currently interning, if your girlfriend must not agree, the other one is your uncle.

··· It's been a year before you look for a file?

One year ago, two months after graduating, you should have gone to the human resources bureau where your household registration is located.

1 school sent it. You didn't report to work. It was returned to the school.

2. You didn't report to work. The school did not receive a dispatch letter. No files were delivered.

Now you have to wait for the start of school to go to school and ask where your files were sent.

If you don't go to college, it's a flaw in your life, think clearly.

Constant power means that the speed at which the force does the work on an object is constant;

p=fv is used to calculate the instantaneous power, where v is the instantaneous velocity, and the instantaneous power corresponds to a moment;

If the power is constant, then f and v are either changing all the time or moving at a constant speed;

w=pt This is the average power, which corresponds to a period of time, when the power is constant, what is obtained is the total work of this time.

It is the instantaneous power (don't forget to multiply by COSA (a is the angle of f v)) brought into meaningless. In the case of instantaneous, t is infinitely close to 0, so the instantaneous power should not be w=pt, and the average power can be.

Strictly speaking, v is the rate of the belt at a certain time, and there is no time interval.

w=pt, which refers to the work done by the belt in time t, or the work done by the machine, provided that the magnitude of t remains the same.