Preschool education to training center

1. I'm a major with you. I graated last year. I hope my answer can help you! Senior internship in the kindergarten for more than half a year, but because no one to bring, can only rely on their own groping, feel no more useful things to learn! Then I went to training institutions for a year! Because the teaching and research meetings are more frequent, I feel that the teaching ability has really improved! Generally, training institutions have to take part in the enrollment work at the beginning of the semester. They are busy at the beginning of the semester and relaxed at the end of the semester. However, they feel that the holidays of training institutions are less, and the holidays are within a week! Now I'm ready to go to kindergarten, thinking that at least most kindergartens have weekends and summer holidays! Also want to improve their professional skills, have the opportunity to participate in the preparation of the examination! From professional Q users: anonymous users
I think early ecation is better, making more money and having a bright future
training schools are tired, kindergartens earn less money; From Q users: anonymous users

2.

The maximum power is generally expressed in horsepower (PS) or kilowatt (kw), 1 horsepower is equal to 0.735 kW. Power is the physical quantity that represents the speed of work done by an object. In physics, power P = work w / time t, and the unit is watt

e to the difference between English system and metric system, the definition of horsepower is basically different. British horsepower (HP) is defined as: a horse pulls 165 feet (FT) of a 200 pound (LB) object in one minute, which is equal to 33000 LB ft / min after multiplication; In the metric system, horsepower (PS) is defined as a horse pulling a 75 kg object for 60 meters in one minute, which is equal to 4500 KGM / min after multiplication

after unit conversion, (1lb = 0.454kg; 1ft = 0.3048m), it is found that 1HP = 4566kgm / min is slightly different from 1ps = 4500kgm / min in metric system. If the watt is used as the unit (1W = 1nm / sec = 0.102kgm / sec), it can get 1HP = 746w; 1ps = 735w, the difference between the two results is about 1.5%

extended data

power can be divided into electric power, force power, etc. So the calculation formula is different

The calculation formula of

Electric Power: P = w / T = UI

In the pure resistance circuit, according to Ohm's law, u = IR can be substituted into P = UI to get P = I2R = (U2) / R

in dynamics: power calculation formula: 1. P = w / T (average power) 2. P = FV; P=Fvcos α Instantaneous power)

because w = f (f force) × S (s displacement) (the definition of work), so the formula of power can also be derived P = f · V:

P = w / T = f * s / T = f * V (this formula is applicable to the uniform linear motion of an object)

the P in the formula represents power, the unit is "watt", abbreviated as "watt", and the symbol is w

W indicates work. The unit is Joule and the symbol is J

t means time, the unit is "second", and the symbol is & quot; s"

3. Torque = 9550 * power / speed, i.e. t = 9549 * P / N

the "torque" of the motor, in N & # 8226; M (nm)
P is the rated (output) power of the motor, and the unit is kW
the denominator is the rated speed, and the unit is RPM (R / min)
torque is a special kind of torque that makes an object rotate. Engine torque refers to the engine torque output from the crankshaft end. When the power is fixed, it is inversely proportional to the engine speed. The faster the speed is, the smaller the torque is, and vice versa. It reflects the load capacity of the vehicle in a certain range. The external torque is called torque or external force couple moment, and the internal torque or internal force couple moment

torque (also known as torque) is a special torque in physics, which is equal to the proct of force and arm of force. The international unit is nm. In addition, such torque units as KGM and LB ft can be seen. Because g = mg, when g = 9.8, the gravity of 1kg is 9.8N, so 1kgm = 9.8nm, while LB ft is the torque unit of British system, 1lb = 0.4536kg; 1ft = 0.3048m, it can be calculated that 1lb ft = 0.13826kgm. In people's daily expression, torque is often called torque (in physics, these are two different concepts). For example, the torque of generation 8 civic 1.8 is 173 5Nm@4300rpm It means that the output torque of the engine at 4300 rpm is 173.5nm. How can the 173.5n power make a car with more than 1 ton run? In fact, the torque proced by the engine has to be amplified (at the cost of recing the speed at the same time), which depends on the gearbox, final drive and tires. The torque released by the engine is amplified by the gearbox, then transmitted to the final drive (tail teeth) for further amplification (at the same time, the speed is further reced), and finally the driving force is released by the tire. For example, if the first gear ratio of a car is 3, the tail teeth is 4, the tire radius is 0.3m, and the original torque is 200nm, the final torque on the axle will be 200 × three × 4 = 2400nm, and then divided by the tire radius of 0.3m, the friction part between the tire and the ground has 2400nm / 0.3m = 8000n, that is, the driving force of 800kg, which is enough to drive the car.

4. Please lengthen the trend chart and look at the previous history!

5. For investors, if they already hold money, they can cash out graally, which can at least guarantee that the principal will not lose. Leave the rest of the money to the market. If you don't hold the coin, it is not recommended to enter. Rupture can happen at any time. I hope I can help you.

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7. Robinson is not in the desert island daydreaming, but action to overcome difficulties Make up a sentence with the relevant words.)

8.

Blankly walking

blankly giggling

blankly dazed

blankly thinking

blankly gazing

9.

< / Yun >

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10. There's a way! There's a way!!