Energy calculation

1. blockchain is a hot technology in recent years. The purpose of establishing this alliance is to promote the introction, output and cooperation of instry technology, technological research and development, innovation, transformation of scientific and technological achievements, promote technological innovation, realize the implementation of blockchain technology for commercial use, and give play to the role of the Alliance in "attracting business". If Changsha can do these, the economic growth will be raised immediately. Now the enterprises in the alliance are also promoting the landing and commercial of blockchain technology to the maximum. For example, China Securities Digital Corporation (cssden) had the project of city blockade on Tencent and mobile travel through the fire line before, and recently cooperated with rongbaozhai to put the entity's cultural works on the rhythm of the chain.

2. Blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects

from these characteristics, it has a wide range of applications, and it must have good application value.

3. If you know the weight and speed, you know its kinetic energy. Kinetic energy is converted into force, and force and distance and energy are directly converted into coke

4. Bullshit. For sure, if we assume that the database is an account book, reading and writing the database can be regarded as a kind of bookkeeping behavior. The principle of blockchain technology is to find out the fastest and best person to keep accounts in a period of time, and let that person do the bookkeeping, This page of the ledger is then sent to everyone else in the system. This is equivalent to changing all the records in the database and sending them to every other node in the whole network. That is to say, it is efficient.

5. Like weightlifting. It seems that there is no need to do work after stabilization, but in fact it is very hard and can not last long. It's going to consume energy. The reason for energy consumption is that the barbell has a slight up and down movement, so it will need to do work and consume energy. I can only make a qualitative analysis like this, but I haven't thought of how to calculate it.

6. W = fs (f direction of force on lever, s displacement in force direction)

7. The heat calculation formula
q = cm △ t is used to calculate the heat absorbed or released by a substance
q is not only the heat released, but also the heat absorbed
m is the quality of the substance (in small letters)
C is the specific heat capacity of the substance, i.e. the heat absorbed or released by the substance when the temperature is increased or decreased by 1 ℃ per kilogram of substance
△ t is the change of object temperature The temperature of heat released by common substances decreases and the temperature of heat absorbed increases)

8. In fact, the law of conservation of energy is a universal law, but it is not suitable in some places. But the law of conservation of momentum works in any environment.

9. It's a big question... What's pressure resistance? The ability to cope with stress? In short, these four abilities belong to the activity range of the brain, which are based on neurons, brain hormone or neurotransmitter network, brain activity and brain connection. And these abilities are not independent and unrelated networks in the brain, nor is a certain brain area responsible for a certain ability, and the rest is ignored. Of course, there are differences in the brain areas that perform the main functions. For example, the declarative memory in memory is related to the hippocampus, the emotional memory (implicit memory) is related to the amygdala, the motor ability is related to the motor cortex, and the brain areas related to stress are mainly the hypothalamus, amygdala and hippocampus. If it involves the response to stress, it also involves the function of the prefrontal lobe, Operation is mainly related to logic, involving part of the function of the left temporal lobe. In fact, these functions will also affect each other. For example, studies have shown that exercise can enhance memory, most likely because a healthy body provides enough energy for the brain to perform memory function. In addition, the impact of stress on memory is my research topic. Stress at different stages has different effects on memory: for example, for declarative memory, when acute stress occurs in the memory formation stage, that is, the learning stage, it can improve attention and enhance the formation of memory; If acute stress occurs in the memory retrieval stage, that is, the memory retrieval stage, a large number of stress hormones will rece the activity of the hippocampus and damage the memory retrieval. So if you want a more scientific answer, at least in my opinion, it is more difficult, because these four abilities involve a lot of brain functions, especially the cooperation of brain regions, so I can only roughly answer that these four abilities can influence each other and enhance each other in moderate cases
Adoption

10. You may not understand these concepts very well. They are a little confused. Point: work is a measure of energy conversion. It means "the process of force doing work corresponds to the process of energy transformation, and the value of work is equal to the value of energy transformation". In the kinetic energy theorem, the total work is equal to the increment (or change) of the kinetic energy of the object (unit object). This total work refers to the algebraic sum of the work done by all the forces on the object (regardless of the concepts of energy conversion and heating). This law itself "looks" at the problem from the perspective of "work", so we don't have to pay attention to such things as energy conversion. If we "look" at the problem from the perspective of "energy conversion", we don't have to pay attention to work. We can directly see which energy increases and which decreases, and then we can work out the formula from the energy conservation. The perspectives of the above two research problems are different, but the results are consistent. Because "the value of work" is equal to "the value of energy conversion". For example, when the work done by sliding friction corresponds to the conversion of mechanical energy into heat energy, if the kinetic energy theorem is used to solve the problem, only the work of friction (regardless of the increased heat) is listed; if the energy conversion is used to solve the problem, only the increased heat (regardless of the work of friction) is listed.