What do virtual currency arrows mean

1.

virtual currency is the currency used for electronic circulation. Now the scope of virtual currency is very large, including q-coin, bitcoin and so on. With the development of digital currency, virtual currency is becoming more and more abundant, which may become the mainstream in the future. For example, BTC, EOS, bcbot and so on are not only virtual currencies, but also algorithms, landing projects and technologies

virtual currency is mainly issued by online game service providers to purchase game props, such as equipment, clothing, etc. But at present, the use of virtual currency has gone far beyond this category. Virtual currency can be used to buy game cards, physical objects and download services of some movies and software

extended data:

real risk

as the proct of e-commerce, virtual currency has begun to play an increasingly important role, and it is more and more connected with the real world. However, with the growth of virtual currency, the relevant laws and regulations are lagging behind, which has laid many hidden dangers

fraud

the private transaction of online virtual currency has realized the two-way circulation between virtual currency and RMB to a certain extent. The activity of these traders is to buy all kinds of virtual currencies and procts at a low price, and then sell them at a high price to earn profits. With the increase of such transactions, there are even virtual mints. In addition to the virtual currency provided by the main company, there are also some people who specialize in "virtual coin making" to obtain virtual currency by playing games and then resell it to other players

Taking Wenzhou as an example, there are about seven or eight such "virtual mints" with four or five hundred practitioners. This not only creates a bubble for the price of the virtual currency itself, but also causes trouble for the normal sale of the issuing company. It also provides a platform for selling and collecting money and money laundering for various cyber crimes. p>

impact system

in modern financial system, the issuers of money are generally central banks, which are responsible for the management and supervision of money operation. As the equivalent exchange goods used to replace the real currency circulation on the Internet, the virtual currency on the Internet is essentially the same as the real currency. The difference is that the issuers are no longer central banks, but Internet companies

if the development of virtual currency makes it form a unified market, each company can exchange with each other, or virtual currency is integrated and unified, and all of them are based on the same standard and price, then in a sense, virtual currency is currency, which is likely to form a threat impact on the traditional financial system or economic operation

reference: network virtual currency

2. Money appears with the constant change of the form of commodity exchange value. At the end of the primitive society, when people had surplus procts, they had to exchange between different tribes. For example, if a tribe had surplus sheep, it was necessary to exchange them with others. By chance, a man with a rabbit also exchanged them. When two people met, one sheep exchanged for five rabbits. It can be seen here that the value of one sheep is represented by five rabbits. This sheep is now represented by five rabbits, which is an initial form of value expression. With the progress of society and the emergence of surplus procts, this kind of transaction is more and more frequent. Finally, people recognized silver and gold as the material to measure the value of all commodities, so money came into being

it can be seen that money itself is a kind of commodity, but this kind of commodity has a special function. It can be exchanged with any other commodity and acts as a general equivalent.

3. According to the roadmap published on the official website, there are two major branches, one is the expansion of underlying functions, the other is the optimization of user experience. The underlying function expansion is mainly to develop new functions on the basis of peer-to-peer payment to support the long-term vision of a real Internet of value (IOV). For example, expand Op_ Return, optimizing the cache architecture for balance, anonymity on the chain, and native protocol component based on op code are designed to support the implementation of functionality
there are two main reasons why user experience optimization is listed separately. First, LBTC wants to build an excellent peer-to-peer e-cash system. Its basic idea is to put payment experience and user first, so it puts it at a high level, such as cross platform light wallet, accelerating payment confirmation speed, optimizing irreversible block mechanism, etc. Second, LBTC has always emphasized superior chain governance system. Before that, there was a standardized SGS (spark governance system) governance system, but it still needs to constantly improve the relevant mechanisms. For example, we should greatly optimize the node parameters and election mechanism, establish the LBTC foundation, multi-channel proposal process, and light wallet's support for the governance function on the chain.

4. Unknown_Error

5. In theory, as long as the friction is equal to 100N of gravity, you can slowly lift the weight. In fact, if the friction is only 100N, it is equal to 100N of gravity, and the resultant force is zero. That is to say, the object is just at rest. In order to lift the object, the resultant force must be greater than zero (as long as it is a little larger)
when you say that the resultant force is 50N, of course you can lift an object.
what you are puzzled about is that you don't mean that the resultant force is 50N, but you use 50N to lift a 100N object, but 150n to lift a 100N object (this resultant force is 50N). Can't you lift a 100N object with 150n
questions are welcome

6. The general formula of sliding friction is f= μ N
static friction refers to the blocking force of the contact surface when the object has a relative motion trend under the action of force. Generally, it is equal to the force that causes the object to have a relative motion trend, that is, f = F

7. Of course, the rolling friction can be calculated according to the force balance or motion characteristics
I want to say something out of the question, and it's just personal opinion

If sliding friction is to convert mechanical energy into heat energy at the friction area, rolling friction should be to convert mechanical energy into rotational kinetic energy of rolling wheel and heat energy at the friction area of rolling wheel shaft
therefore, the rolling friction should be related to the radius and moment of inertia of the rolling wheel, the radius ratio of the shaft to the rolling wheel, and the friction coefficient between the shaft and the rolling wheel

let R be the radius of the shaft, R be the radius of the roller, and the friction coefficient between the shaft and the roller be μ 1,
then the rolling friction coefficient is 0 μ 2= μ 1 * r / R, because R / R is usually very small, the rolling friction is always very small
the kinetic energy loss of the rolling wheel is not considered here, because it is also related to the motion state of the whole system
it does not take into account the change of the pressure transferred from the gravity of the object to the rotating shaft, and does not take into account the deformation of the object, because these are difficult to calculate

the above views only represent personal opinions and have not been proved^_^

8. Specific topic? Need
force analysis
, what external force? The formula F = UN, u is the dynamic friction factor and N is the supporting force or elastic force.

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