When drawing with ruler and compasses, move an angle (not translation), and the two sides of the angle are not parallel,

When drawing with ruler and compasses, move an angle (not translation), and the two sides of the angle are not parallel,

Make a straight line at one side of the corner where you need to move, take the vertex of the known corner as the center of the circle, make an arc with any radius to cross both sides of the known corner, and make an arc with the vertex of the corner where you need to move as the center of the circle with the same radius to cross a straight line at a point a;
Use a compass to measure the intersection distance between the arc and the known angle. On the side where the new angle has been made, point a intercepts an arc of the same length, and the intersection point is B. connect the vertex of the new angle with point B and extend it. The obtained angle is the desired angle

Why can directional moving electrons do work?
Why can a galvanic battery light a bulb

On the one hand, the directionally moving electron in the wire will be accelerated by the electric field force of the power supply, when the power supply does work on the electron; on the other hand, the moving electron will be slowed down by the collision of positive ions along the way, when the electron overcomes the resistance to do work
The two poles of the primary cell are different metal atoms. They have different attraction to electrons. If they have strong attraction to electrons, they pull electrons to their side. As a result, electrons flow through wires and light bulbs and approach the "strong" atom. When passing through the light bulb, electrons collide with tungsten atoms fiercely, which makes tungsten atoms heat up, heat up and emit light

The human lift does not work when it moves horizontally
If the water moves, it must have a strong effect on it. Isn't this force doing work on the water

Your force is to overcome the water gravity and the friction between the walking people and the water gravity and the ground. If you do not work on the water itself, you can understand that the water temperature has not changed

Do forces do work on objects moving horizontally
For example, if you walk a distance with a glass of water on the horizontal end, is this the work of force on the water

If the force is perpendicular to the direction of motion, work will not be done, otherwise work will be done

What force does an object do when it moves horizontally?

Work is done by a force that has a component in the level
W=Fscosα
Work is actually the product of force and displacement

Does horizontal movement of carrying water do work
A person needs to lift 10 barrels of water from a 5-meter-deep well every day, and carry the water along the horizontal road to his home 300 meters away from the well. If the weight of a barrel of water is 20 kg, the bucket is lifted up from the well at a constant speed, and the person's daily work is () J (excluding the weight of the barrel and rope)
From carrying water home, that distance of 300 meters, did this man do any work?

From carrying water to home, 300 meters away, the man did not work. The force used to carry water was vertical and upward, while he moved horizontally. Although he moved for a certain distance, he did not move in the direction of the force
8 N / kg. 5 m · 10 = 9800 J

In the plane, a figure moves along a certain (), which is called translation

In the plane, a figure moves a certain distance along a certain direction, which is called translation

When an object or a figure moves in translation, it moves in the direction () and () does not change in direction
Write terms (e.g. level, shape, etc.) in ()

The translational motion of an object or figure is to move in the (horizontal) direction, but not in the (vertical) direction

In the plane, the figure and motion of a figure () is called translation. Translation does not change the () and () of the figure,
In the plane, the figure and motion of a figure () is called translation. Translation does not change the () and () of the figure. After translation, it corresponds to line segment (), corresponding angle (), corresponding line segment connected by the point ()

Size. Shape. Proportional. Equal. Parallel

A parallelogram must not be an axisymmetric figure______ (judge right or wrong)

Parallelogram must not be an axisymmetric figure. For example, rectangle and square are special parallelogram, they are axisymmetric figures, so parallelogram is not necessarily an axisymmetric figure, not necessarily an axisymmetric figure