Lightcoin okxe
Publish: 2021-05-15 18:44:00
1. Because of
,
when an object overcomes friction to do work, you need to know
to calculate the work done by a force (including friction)
. It's that the object does external work, and the angle is greater than 90 degrees. This is not the case.
the state of motion has nothing to do with overcoming friction. We can also say that the object is doing work against friction. There are different situations: 1. Putting pressure on the gas is just a change of opinion. Work done to overcome friction is friction multiplied by distance. When friction does negative work on an object, external force is human thrust. For example, work done to overcome gravity is actually gravity multiplied by height. Generally, the dynamic friction force is more accurate than the static friction force, so the work done to overcome the friction force is more accurate than that of FS
Yes,
② the answer to push a wooden box on a smooth surface is a bit misleading.
in fact,
, external force and friction work on an object at the same time, so it is impossible to calculate the final velocity of an object in the case of unknown smooth tabletop. It's relative displacement, not absolute displacement< By the way,
on the conveyor belt,
push the wooden box on the horizontal plane, the answer is not FS
,
discuss the problem of friction again, only the kinetic energy of the object is changed. Of course, there is a difference.
when an object works against friction, friction is the driving force and displacement occurs (displacement and friction are not perpendicular). And the work of friction force on the object is the work of external force on the object, and the external force does positive work. To lose energy, friction can do work and increase its own energy,
absorbing (or releasing) heat is another case, just like people give you money. The friction f placed on the
inclined plane is static friction<
F = 30n
s = 3M
m = 1kg
for objects,
internal energy is equal to the work done by friction,
Q1 = UMG * s
(here q is internal energy)
similarly for desktop,
. If the angle is less than 90 degrees, it means that the friction does negative work and the object does work against the friction
if the internal energy
is required, the friction coefficient u (not this letter, but another way of saying that friction does negative work) is required
can you tell me what kind of problem it is?. Friction does positive work, and belt is static friction does positive work. Friction does positive work. The internal energy of the gas increases, just like you give the money in your pocket to others. It is a kind of situation that an object overcomes friction to do work. There is always a difference between the force and the relative displacement in the direction of the force. That is, the object is subject to friction (which can be a component force), and the friction is resistance,
,
when an object overcomes friction to do work, you need to know
to calculate the work done by a force (including friction)
. It's that the object does external work, and the angle is greater than 90 degrees. This is not the case.
the state of motion has nothing to do with overcoming friction. We can also say that the object is doing work against friction. There are different situations: 1. Putting pressure on the gas is just a change of opinion. Work done to overcome friction is friction multiplied by distance. When friction does negative work on an object, external force is human thrust. For example, work done to overcome gravity is actually gravity multiplied by height. Generally, the dynamic friction force is more accurate than the static friction force, so the work done to overcome the friction force is more accurate than that of FS
Yes,
② the answer to push a wooden box on a smooth surface is a bit misleading.
in fact,
, external force and friction work on an object at the same time, so it is impossible to calculate the final velocity of an object in the case of unknown smooth tabletop. It's relative displacement, not absolute displacement< By the way,
on the conveyor belt,
push the wooden box on the horizontal plane, the answer is not FS
,
discuss the problem of friction again, only the kinetic energy of the object is changed. Of course, there is a difference.
when an object works against friction, friction is the driving force and displacement occurs (displacement and friction are not perpendicular). And the work of friction force on the object is the work of external force on the object, and the external force does positive work. To lose energy, friction can do work and increase its own energy,
absorbing (or releasing) heat is another case, just like people give you money. The friction f placed on the
inclined plane is static friction<
F = 30n
s = 3M
m = 1kg
for objects,
internal energy is equal to the work done by friction,
Q1 = UMG * s
(here q is internal energy)
similarly for desktop,
. If the angle is less than 90 degrees, it means that the friction does negative work and the object does work against the friction
if the internal energy
is required, the friction coefficient u (not this letter, but another way of saying that friction does negative work) is required
can you tell me what kind of problem it is?. Friction does positive work, and belt is static friction does positive work. Friction does positive work. The internal energy of the gas increases, just like you give the money in your pocket to others. It is a kind of situation that an object overcomes friction to do work. There is always a difference between the force and the relative displacement in the direction of the force. That is, the object is subject to friction (which can be a component force), and the friction is resistance,
2. It's hard to say that bitcoin is the first digital currency based on blockchain in the world, which is invested by investors all over the world. For the time being, bitcoin is the largest investor. Other currencies have less influence than bitcoin, and their audience is not wide enough.
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sustemnet
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lithtinthebox.com
2. http://www.systemnet.com/cart/
sustemnet
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4. As the first account book of the film and television instry, HLW chain is an intelligent cooperative application platform for the global film and television instry chain, with open expenses, open profits, open dividends, decentralized circulation and decentralized assets; At present, several major cultural exchanges in China, such as Hengdian, Jiangsu and Gansu, are preparing to launch a public service platform of blockchain for films and TV dramas. Blockchain technology is used to provide services for film and TV dramas registration, project investment and project publicity, as well as the combination of film and TV with the application of emerging technologies.
5. The epidemic has caused great damage to the world, not only to life safety and public health, but also to the global economy and financial markets. According to the latest forecast of IMF, the global economy may shrink by more than 3% in 2020, among which the developed countries will generally have negative growth, while China and India may only maintain normal growth
in the face of such a large-scale disaster that is more serious than any other economic crisis in history, the most common means to help the workers and enterprises in trouble are the government issuing treasury bonds and the central bank printing money. The United States has issued three rounds of fiscal stimulus policies, the total stimulus scale is more than US $2.1 trillion, and the fourth round of US $484 billion stimulus is about to be launched. The four rounds of quantitative easing will reach US $2.6 trillion, accounting for about 12% of the US GDP in 19 years. This is an appalling figure, equivalent to 8.9% off everyone's wealth
in China, the amount of water released by the central bank is only 50% higher than that in the United States. The United States releases water, which is shared by people all over the world. As the RMB has not yet completed the mission of global currency, most of the water released by China is borne by the Chinese people. In other words, when the United States releases water, the Chinese people will bear part of it, and when China releases water, the Chinese people will bear most of it, so their wealth will be discounted. It is urgent to give up holding cash and find a safe investment channel and high-quality hedging assets
traditional hedging investment assets include treasury bonds, gold, funds, etc., but the financial crisis is fierce, and the traditional hedging assets are no longer enough to ensure that the property will not depreciate. Bitoffer analyst Lucian believes that bitcoin ETF fund may be the best hedge asset at this stage
first of all, bitcoin is known as "digital gold", and bitcoin exists in the decentralized blockchain, so it is almost impossible to lose (unless you forget the private key), which is more secure than gold hidden in the safe at home; Secondly, bitcoin is easy to carry and can be used for circulation payment, which is more and more widely than gold. On the one hand, it is the stored value function of digital gold; on the other hand, it is the payment and circulation function of money. What is more difficult is that the price of bitcoin is seriously undervalued and will continue to rise in the future. Therefore, bitcoin is a better hedge investment asset than gold
and bitcoin ETF fund is the best tool to enlarge bitcoin income. Why do you say that? Although the contract can also enlarge the income of bitcoin, but the contract is easy to burst, once the price volatility is large, the contract burst will make investors lose money. Bitcoin ETF funds are different. Through the dynamic position adjustment mechanism, ETF funds do not have the risk of bursting positions. Moreover, through the rising net value of the fund, they can continue to earn income from income. The earlier they buy, the bigger the income rolls, with the lowest income of 3 times and the highest income of 17 times
for example, if you buy a bitcoin for us $10000, you can double the spot price, while ETF funds don't worry about bursting their positions. The minimum profit is 3 times and the maximum profit is 17 times. That is to say, if bitcoin doubles, ETF funds can earn US $170000.
in the face of such a large-scale disaster that is more serious than any other economic crisis in history, the most common means to help the workers and enterprises in trouble are the government issuing treasury bonds and the central bank printing money. The United States has issued three rounds of fiscal stimulus policies, the total stimulus scale is more than US $2.1 trillion, and the fourth round of US $484 billion stimulus is about to be launched. The four rounds of quantitative easing will reach US $2.6 trillion, accounting for about 12% of the US GDP in 19 years. This is an appalling figure, equivalent to 8.9% off everyone's wealth
in China, the amount of water released by the central bank is only 50% higher than that in the United States. The United States releases water, which is shared by people all over the world. As the RMB has not yet completed the mission of global currency, most of the water released by China is borne by the Chinese people. In other words, when the United States releases water, the Chinese people will bear part of it, and when China releases water, the Chinese people will bear most of it, so their wealth will be discounted. It is urgent to give up holding cash and find a safe investment channel and high-quality hedging assets
traditional hedging investment assets include treasury bonds, gold, funds, etc., but the financial crisis is fierce, and the traditional hedging assets are no longer enough to ensure that the property will not depreciate. Bitoffer analyst Lucian believes that bitcoin ETF fund may be the best hedge asset at this stage
first of all, bitcoin is known as "digital gold", and bitcoin exists in the decentralized blockchain, so it is almost impossible to lose (unless you forget the private key), which is more secure than gold hidden in the safe at home; Secondly, bitcoin is easy to carry and can be used for circulation payment, which is more and more widely than gold. On the one hand, it is the stored value function of digital gold; on the other hand, it is the payment and circulation function of money. What is more difficult is that the price of bitcoin is seriously undervalued and will continue to rise in the future. Therefore, bitcoin is a better hedge investment asset than gold
and bitcoin ETF fund is the best tool to enlarge bitcoin income. Why do you say that? Although the contract can also enlarge the income of bitcoin, but the contract is easy to burst, once the price volatility is large, the contract burst will make investors lose money. Bitcoin ETF funds are different. Through the dynamic position adjustment mechanism, ETF funds do not have the risk of bursting positions. Moreover, through the rising net value of the fund, they can continue to earn income from income. The earlier they buy, the bigger the income rolls, with the lowest income of 3 times and the highest income of 17 times
for example, if you buy a bitcoin for us $10000, you can double the spot price, while ETF funds don't worry about bursting their positions. The minimum profit is 3 times and the maximum profit is 17 times. That is to say, if bitcoin doubles, ETF funds can earn US $170000.
6. For five years, Leyte is an old currency.
7. Yes, there are delivery contracts and perpetual contracts.
8. It's definitely worth investing. Bitcoin and lightcoin are the investment procts that go through Niuxiong.
9. This is the cooperation between big exchanges and mainstream currencies.
10. Unknown_Error
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