What's the impact
Starting from the essence of black money,
the essence of black money is actually a special solution generated by a bunch of complex algorithms. A special solution is one of the infinite (in fact, bitcoin is finite) solutions that can be obtained from the equations. Every particular solution can solve the equation and is unique[ 8] In the metaphor of RMB, black money is the serial number of RMB. If you know the serial number of a note, you have the note. The process of mining is to constantly seek the special solution of the equation system through huge amount of calculation. The equation system is designed to have only 22 million special solutions, so the upper limit of bitcoin is 22 million[ 8]
to mine the dark coin, you can download the special dark coin calculation tool, register various cooperative mine pool websites, fill the registered user name and password (miner user) into the calculation program, and then click the operation to officially start. After completing the installation of the darkcoin client, you can directly obtain a darkcoin address. When others pay, you only need to post the address to others, and you can pay through the same client. After installing the Black Coin client, it will distribute a private key and a public key. You need to back up your wallet data containing your private key to ensure that your property is not lost. Unfortunately, if the hard disk is completely formatted, the personal dark coin will be completely lost
RMB can also be electronic and more flexible than paper money. The central bank's digital currency is the electronic RMB, which is equivalent to paper money, but more flexible than paper money. It can also track your capital flow, and can pay without network
there is also "impact energy". Not to mention what is smashed, how can it be regarded as impact energy
his energy is 0.51kg * 0.98m/s ^ 2 * 1.3m
it's hard to say what his impact energy is. If it's hard enough, the impact energy can still be 0. If it's soft enough, the impact energy can reach the maximum value calculated above
P = MV
I = ft = △ P
F can be calculated.
for example, when a bullet hits a wall at a speed of 400m / s, it takes 0.1s
P = 400m
F = P / T = 4000N
the momentum change of the object is Δ P = m (U-V), then the impulse is I = m (U-V), so the impulse is f = m (U-V) / T
where f, u and V are vectors.
first, the free falling time of 100 mm height:
t = (2 h / g) ^ 1 / 2
Second, the free falling speed of 100 mm height:
V = GT
third, the maximum bearing capacity of the test object at the moment = the weight of the weight of the code 25 kg * the free falling speed of 100 mm height / the impact time of the test object
The simplified calculation method of flow impact force
assumption:
the pipeline is full of flow
uniform flow
at the 90 degree turn, all momentum is absorbed by the structure
it is known that the diameter (inner diameter) of the pipe is d (m), and the density of water is d (m) ρ= 1000kg / m3, the flow velocity is V (M / s)
F = ma= ρ AV*V= ρ* 7854d2v2
if the maximum velocity in the pipeline is 5m / s, the impact force under different pipe diameters is as follows:
pipe size (mm) Pipe inner diameter D (m) Sectional area (M2) Velocity (M / s) Impact force (n)
110 zero point one zero one zero point zero zero eight five 200
125 zero point one one five zero point zero one zero four five 260
160 zero point one four seven zero point zero one six nine five 422
200 zero point one eight three zero point zero two six three five 657
250 zero point two three zero point zero four one five five 1037
315 zero point two nine zero point zero six six zero five 1650