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Anonymous users2024-02-11Momentum. momentum
A measure of the translational motion of an object. In classical mechanics, momentum is the product of the mass m and velocity v of an object. It is vector, and it is in the same direction as velocity.
The change in the translational motion of an object can be explained by the transfer and conservation of momentum (see Momentum Theorem, Law of Conservation of Momentum). In the middle of the 17th century, Descartes proposed the concept of motion and used it to explain the imperishability of motion, but he regarded the amount of motion as a scalar quantity, which is the product of the mass and velocity of an object, so the explanation of the imperishability of motion is imperfect and incorrect. In 1666, Huygens et al., in their report to the Royal Society, defined momentum as the product of mass and velocity vectors, and perfectly analyzed the transfer and conservation of motion in the elastic collision of objects.
According to the special theory of relativity, the momentum of a particle with a velocity close to the speed of light cannot be applied in time by the product of the mass at rest m0 and the velocity v.
MV root number (1-V2C2).
where c is the speed of light. It can be seen that when the velocity of the object approaches the speed of light, the momentum will tend to infinity. Quantum mechanics analyzes from another angle, a photon moving at the speed of light with zero static mass also has momentum, which is expressed by h or e c, where h is Planck's constant, which is the wavelength of light, and e is the photon energy.
These are confirmed in the transfer and conservation of the motion of subatomic particles. In the International System of Units, momentum is measured in kilograms, meters, and seconds.
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Anonymous users2024-02-10It's too annoying to say.
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Anonymous users2024-02-09The explanation of terms usually includes the following aspects:
1.Definition: A brief explanation of the meaning of the noun so that the reader can understand its basic concepts.
2.Characteristics: Introduce some of the characteristics, attributes, or characteristics of the noun to help the reader understand it more fully.
3.Classification: Classify the noun according to some standard, and list the differences and connections between the categories.
4.Uses: Explain the role and value of the term in practical application, so that readers know what its specific uses are.
5.Development History: Introduce the important events or milestones experienced in the process of the development and evolution of the term from its inception to development, so that readers can understand its background and historical origin.
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Anonymous users2024-02-08The correct explanation of the following proper nouns is: ().
Automatic train control (correct stool hidden answer).
Axle counting segment (positive cavity socks exact answer).
Train integrity.
Emergency jujube dome braking (correct answer).
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Anonymous users2024-02-07Basic explanation. [Paraphrase].
Name) is a word that denotes the name of a person or thing; Such as "people, cows, water, friendship, groups, today, middle, Beijing." ”
Noun) (noun) is a term or a word similar to a term. Chemical noun New noun.
Name) is a word that expresses a concept in the structure of a syllogism.
Composition] is more formal: noun (word.
Example sentence] nouns are often used as subjects and objects. English translation (as subject).
A word that denotes the name of a person or thing).
noun;substantive
2.term;
phrase
Words that express concepts in the structure of syllogism).
name explained in detail.
Noun. míngcí
noun;substantive]
A word that denotes a name (e.g., person, animal).
In addition to pronouns, words that are used as the subject or object of a verb in a sentence, or in an independent structure.
or as a predicate after a verb.
Words used. (1).Words of term or similar term.
Ding ling. "Du Wanxiang": "Resist US aggression and aid Korea, evening fragrance."
I haven't understood this new term yet, Lee.
The youngest son of the family signed up for the army. ”
Liu Qing. "In Huangfu Village in the Autumn of 1955": "He wanted to join the agricultural society, but he didn't know the term. ”
2).Grammatical term is a word that denotes the name of a person or thing.
Zhang Binglin. "The Book of Promises: "Language must be a noun, a verb, and a verb.
3).Logic is a word that expresses a concept in the structure of a syllogism.
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