Young people don't go to bitcoin
money is now a tool that can not be acquired by human society. Its existence greatly facilitates the transactions in our daily life. But now it is a mobile payment era. There is very little physical money. Most of them are Alipay or WeChat. But does the big family know that there is a currency called bitcoin? It's a kind of virtual currency. Now it's very valuable. Once a person bought 100000 bitcoins. What's the matter now
After that, Li Xiaolai quit his job as an English teacher and started an investment company with a value of 67 billion yuan. He also opened many courses on Internet investment for you to learn. Many people call him "the richest man in bitcoin in China". However, he may be one of the people with the most bitcoin in the world, It can only be said that Li Xiaolai's eyes are really poisonous. What do you think of thiswhy
because buying bitcoin early is risky
we can see that bitcoin is a million times higher than eight years ago, but eight years ago, we can't know that bitcoin will be a million times higher in eight years
if you really bought bitcoin eight years ago, bitcoin may have returned to zero and all your investments will be at a loss. This possibility existed originally, but it didn't come out
in stock investment, there is a "market efficiency theory"
it means that the high price of an asset at a certain moment means that it is worth so much money. This price comprehensively reflects all the benefits and risks...
eight years ago, bitcoin was worth so much money
today's bitcoin is 40000 yuan, which is also worth so much money
today's bitcoin is not the same as eight years ago. Just like Fan Bingbing today and 10 years ago, they are not the same Fan Bingbing
eight years ago, bitcoin was not worth money because few people knew it and used it. Today, it's worth seeing bitcoin grow up. But if we go back to that time to judge, it is likely to die, it may return to zero at any time, and it faces too many risks. Maybe a new competitive currency will replace it when it comes out, or it will go to zero when no one uses it at all
at any time point, the ratio of return to risk of investing in any asset is close
for example, at this moment, investing in houses, stocks and bitcoin has its own benefits and risks. So they show different prices
roughly speaking, there is no profit to invest in any target.
in short, bitcoin is a virtual currency . Like stocks, it can be invested and traded. In technical terms, bitcoin is a kind of P2P digital currency
but after all, the nature and mode of bitcoin is different from other currencies, and it may prosper in the future. It may also be like the collapse of the economic bubble, which is unknown. If you enter the bitcoin market and have a quarrel, it will not become a real currency, because the fluctuation of the price is impossible to satisfy everyone. If there is a profit, there is a loss. Therefore, the investment of bitcoin should be cautious. If you don't fully grasp it, don't try it easily strong>
the first one is the spring vibrator model
when the vibrator moves at the farthest end of the deviation from the equilibrium position, the velocity is zero and the kinetic energy is zero. The mechanical energy is elastic potential energy, the size is
etotal = EP = 0.5ka2
when the spring vibrator moves to the equilibrium position, the spring type variable is 0. According to the conservation of mechanical energy, there are:
0.5mv2max = 0.5ka2
solution:
Vmax = a √ (K / M)
in the above formula, K: Spring progress coefficient.
A: amplitude
m: mass of oscillator
Second: simple penlum model
when the penlum ball moves to the highest point, the velocity is zero, and the ball has only gravitational potential energy. The size is EP = MGL (1-cos) θ),< br /> θ When the ball moves to the equilibrium position (the lowest point), the gravitational potential energy of the ball is all transformed into kinetic energy of the ball, so the velocity at the equilibrium position is the maximum θ)= 0.5mv2max
solution:
Vmax = √ (2GL (1-cos θ))< br />cos θ= √(1-sin θ^ 2
)
sin θ^ 2 = ([A / l] ^ 2
so Vmax = √ (2GL (1 - √ (1 - ([A / l] ^ 2
)))
university stage: you can first assume that the displacement function x = asin (WT)+ ψ), In the formula, a is the vibration amplitude. W = 2 Π / T, bring in the formula, select an initial phase, and then you can calculate the displacement function. Calculate the first derivative of the displacement function and remove the extremum. Then you can get the maximum speed.
it's depressing. The network display is incomplete. I wrote it in word. If you need it, leave an email and I can send it to you.
