Lightcoin Post Bar
bitcoin (bitcoin: bitcoin) is a kind of network virtual currency, which can buy real-life goods. It is characterized by decentralization, anonymity, and can only be used in the digital world. It does not belong to any country or financial institution, and is not subject to geographical restrictions. It can be exchanged anywhere in the world. Therefore, it is used as a money laundering tool by some criminals. In 2013, the U.S. government recognized the legal status of bitcoin, making the price of bitcoin soar. In China, on November 19, 2013, a bitcoin was equivalent to 6989 yuan
Calculation formula: ft = {MV
F is the average force, t is the time, M is the mass of the object, V is the velocity, and} is the variation; This formula is understood as that the impact force and its time acting on the object are equal to the change of momentum of the object
impact force refers to the force that appears when objects collide with each other. In the process of collision or striking, the force that suddenly increases and then rapidly disappears between objects is also called impact force or impact force. The characteristic of the impact force is that the action time is very short, but the magnitude can be very large. "
The impact force of this fluid is e to the continuous interaction between the fluid (such as water) and the object, resulting in impact force. The difficulty lies in the selection of research object and research process 
extended data
usually, the solution of this kind of problem should focus on two points:
(1) using the "infinitesimal method" to determine the research object and research process: because the fluid is continuously interacting with the object, we can select a short period of time Δ T to determine the object. As mentioned above: in Δ T time, our research object is actually in the figure Δ Water in part X
what is the quality of this part of water Δ m= ρ S′v Δ T -- because the time is very short, the speed of water rising for a short distance can be regarded as constant; In addition, it should be noted that when the water reaches this position, the cross-sectional area becomes s ′, and s ′ is unknown. Because the water is continuous, combined with the first question,
Δ m= ρ S′v Δ t＝ ρ SVo Δ T
(2) ignoring the gravity of water. When using the micro element method to deal with the problem, the gravity and the impact force can be compared slightly< br />
bitcoin, Leyte and Ruitai all have corresponding application scenarios. Although they are not mature yet, there is always a big pie.