...air resistance goes with velocity cubed, not squared.
The power increases with the velocity cubed, but since a faster vehicle covers the same distance in less time the actual energy used per mile only increases with the square of the velocity.
Oil makes up an insignificant fraction of electricity generation. The last time I checked the breakdown for the U.S. was around: 50% Coal, 20% Nuclear, 20% Natural Gas, 10% Hydroelectric. Here is the wikipedia page on it.
PDVSA is government owned, US payments go to the Venezuelan government, and the government determines how the payments are to be distributed. Claims that it was caused by the US are far fetched, because the US didn't have the influence it would take to cause the 'labor stoppage'. It seems more likely that it happened because Chavez's planned oil production cutbacks would put some oil workers out of work. Workers don't like the threat of having to find a new job. Managers don't like the reduction in status from managing a smaller number of people.
If I were president of Venezuela I would have fired the workers too. That doesn't change the fact that it was an internal problem. Firing striking workers tends to be unpopular, so Chavez claimed that the people he fired were working with the US.
I'm not sure what you're talking about. PDVSA was never sold, and was always government controlled. When workers went on strike because they didn't like Chavez's new policies, Chavez fired them and hired loyal workers. He called that 're-nationalization' but the oil wells were always owned by the government. None of this has anything to do with the US, except that Chavez blamed the US for Venezuelan workers going on strike.
Chavez should be praised if on for nationalizing the nation's oil resources...
Why should Chavez get credit for that? Venezuela nationalized their oil in 1976. Maybe he's unpopular in the U.S. because he blames all of Venezuela's problems on us.
Basically the problem is that it takes as much energy to split water into H2 and O2 as you would get from putting it back together. And you can't harness the energy from putting it back together without loosing some of it. So the energy gained would always be less than the energy used.
If a supercharger increases an engines efficiency it does so by increasing the efficiency of the overall process (which is normally 10% to 20%) to save more energy than it uses.
This effect doesn't apply to hydrogen because water is split into hydrogen using electricity, and electricity is created mostly from fossil fuels at 30% efficiency. The only way a hydrogen powered car could be more efficient overall than gas powered car is if it converted the chemical energy to physical energy much more efficiently than a gas engine. The only way to do that with modern technology is a fuel cell, which costs hundreds of thousands of dollars.
I know the iPhone's not popular here right now. But it has a very low barrier to entry compared to writing a program for any other platform. Internet hosting, collecting payments, and to a certain extent marketing is already handled for you. All you would have to do is the actual programming work.
That includes people that aren't working. According to that wikipedia page the median income for men that are working is $45,000 per year ($35,000 for women).
AT&T does send you a text message warning you about the international rates when you enter to another country. He was using a wireless data card so he might not have received it. Before I went to Europe I had to actually call AT&T to get international roaming turned on.
I figured I would it use it to check my email and only look at emails that I knew were text only. But then my mom sent me one with three pictures attached to it, cost me $60 just to look at one email.
Science isn't indoctrination, but a lot of what is taught in public school is indoctrination. When I was in public school I was forced to take classes that taught the government stance on: drugs, various foreign countries, sex education, how government should be run, and the justice system.
I actually left high school believing that democracy makes Americas laws just (which is doesn't) and that America has 'the best justice system in the world' whatever that means.
The only reason Coal, Nuclear and Hydroelectric power plants don't handle peak loads is because they are all running at 100% all the time and the government won't let any more be built. They are the cheapest way to produce electricity.
They only real 'peak load' systems are natural gas power plants, and that is because they are still allowed to be built but cost more than the 'base load' systems, so they are only turned on when there isn't enough 'base load' power available.
Wind and Solar don't fall into either of those categories because they are really expensive and can't be turned on when extra capacity is needed.
They need to transmit the power long distances to mitigate the power storage issues associated with wind power. Wind turbines tend to produce 50% of their overall electricity in just 15% of their operating time. This means that if you build exactly enough windmills to power a city those windmills will be producing too much power 15% of the time and not enough power 85% of the time.
If the windmills are producing too much power that power can be transmitted to other more distant cities, and when the windmills aren't producing enough power the city can get power from windmills that are further away. But this requires more power lines to be built.
The only other way to deal with the intermittent nature of wind power is to build more windmills and find a way to store the electricity, which would cost more that building the extra power lines.
Give houses a large tank of water. In the winter heat the water when there is an electricity surplus, then use the hot water to heat the house. In the summer cool the water when there is an electricity surplus, then use the cold water to cool the house.
That would be a very environmentally friendly and almost 100% efficient way to store the energy. It would be much cheeper than batteries or any other storage method. And when you consider that 80% to 90% of domestic electricity is used for cooling or heating it would go a long way towards dealing with the problems of storing renewable energy.
... but most of it goes back into the atmosphere when the lawn is cut.
That really depends on what the homeowner does with the grass after it is cut. If it goes in a land fill most of the carbon probably stays underground. If if goes into a compost heap then more of the carbon goes back into the atmosphere.
Although I personally think laws waste a lot of resources (especially in LA where I live).
The last launch failed because of a stage separation problem too. It seems to me that stage separation is one of those things that they can't realistically test on the ground, so it's impossible to verify that a design will work reliably without actually launching the rocket. Maybe they should consider copying the stage separation mechanism of a successful rocket to avoid having this happen on their next launch.
I turn the 3G off if I'm going to use the phone for a long time without charging it. I think the main reason the iPhone has battery problems is because people use the web on it more than people do on other phones.
For instance I couldn't even read the slashdot main page on a windows mobile pone, but on the iPhone I am constantly checking slashdot including reading the articles and comments.
In the example above he probably gets good battery life because he only uses if for email. If I only use the email on my iPhone battery life isn't a problem.
I never said that I thought they were are on the same level. But they both deliberately make life harder for people who disagree with them. Those kinds of tactics are stupid because they don't win anyone over to their side, and make people who were neutral see them (and the entire animal rights movement) as unreasonable.
...you're probably a racist too. You need to take a deep breath and calm down.
The cost of uranium will shoot up. But cost of uranium is only a small fraction of the total cost of nuclear power, so even if the cost of uranium increased to ten times what it is today the cost of nuclear energy would only increase a small amount.
Ya, I am a Realtor, if you have a question about homes ask me, my advice is always free.
What exactly do realtors do? Why would I want to use a realtor to sell a home rather than listing the home myself, and what is the benefit of using a realtor to find a home rather than just looking through the listings myself?
I'm not actually planning on buying a home any time soon, but I'd like to know. Usually I prefer researching major purchasing decisions myself, rather than trusting a salesperson.
Slashdot Mirror
...air resistance goes with velocity cubed, not squared.
The power increases with the velocity cubed, but since a faster vehicle covers the same distance in less time the actual energy used per mile only increases with the square of the velocity.
Oil makes up an insignificant fraction of electricity generation. The last time I checked the breakdown for the U.S. was around: 50% Coal, 20% Nuclear, 20% Natural Gas, 10% Hydroelectric. Here is the wikipedia page on it.
He might be referring to the artifacts found on Gardner Island that could have come from her plane.
PDVSA is government owned, US payments go to the Venezuelan government, and the government determines how the payments are to be distributed. Claims that it was caused by the US are far fetched, because the US didn't have the influence it would take to cause the 'labor stoppage'. It seems more likely that it happened because Chavez's planned oil production cutbacks would put some oil workers out of work. Workers don't like the threat of having to find a new job. Managers don't like the reduction in status from managing a smaller number of people.
If I were president of Venezuela I would have fired the workers too. That doesn't change the fact that it was an internal problem. Firing striking workers tends to be unpopular, so Chavez claimed that the people he fired were working with the US.
I'm not sure what you're talking about. PDVSA was never sold, and was always government controlled. When workers went on strike because they didn't like Chavez's new policies, Chavez fired them and hired loyal workers. He called that 're-nationalization' but the oil wells were always owned by the government. None of this has anything to do with the US, except that Chavez blamed the US for Venezuelan workers going on strike.
Chavez should be praised if on for nationalizing the nation's oil resources...
Why should Chavez get credit for that? Venezuela nationalized their oil in 1976. Maybe he's unpopular in the U.S. because he blames all of Venezuela's problems on us.
History has shown that China's military is strong enough for it to be a military dictatorship. Unless you think that it has gotten weaker since 1989.
Perhaps you haven't heard of the First Law of thermodynamics which applies to heat engines.
Also, you might want to look at the Law of Conservation of energy
Basically the problem is that it takes as much energy to split water into H2 and O2 as you would get from putting it back together. And you can't harness the energy from putting it back together without loosing some of it. So the energy gained would always be less than the energy used.
If a supercharger increases an engines efficiency it does so by increasing the efficiency of the overall process (which is normally 10% to 20%) to save more energy than it uses.
This effect doesn't apply to hydrogen because water is split into hydrogen using electricity, and electricity is created mostly from fossil fuels at 30% efficiency. The only way a hydrogen powered car could be more efficient overall than gas powered car is if it converted the chemical energy to physical energy much more efficiently than a gas engine. The only way to do that with modern technology is a fuel cell, which costs hundreds of thousands of dollars.
I know the iPhone's not popular here right now. But it has a very low barrier to entry compared to writing a program for any other platform. Internet hosting, collecting payments, and to a certain extent marketing is already handled for you. All you would have to do is the actual programming work.
That includes people that aren't working. According to that wikipedia page the median income for men that are working is $45,000 per year ($35,000 for women).
AT&T does send you a text message warning you about the international rates when you enter to another country. He was using a wireless data card so he might not have received it. Before I went to Europe I had to actually call AT&T to get international roaming turned on.
I figured I would it use it to check my email and only look at emails that I knew were text only. But then my mom sent me one with three pictures attached to it, cost me $60 just to look at one email.
Science isn't indoctrination, but a lot of what is taught in public school is indoctrination. When I was in public school I was forced to take classes that taught the government stance on: drugs, various foreign countries, sex education, how government should be run, and the justice system.
I actually left high school believing that democracy makes Americas laws just (which is doesn't) and that America has 'the best justice system in the world' whatever that means.
The only reason Coal, Nuclear and Hydroelectric power plants don't handle peak loads is because they are all running at 100% all the time and the government won't let any more be built. They are the cheapest way to produce electricity.
They only real 'peak load' systems are natural gas power plants, and that is because they are still allowed to be built but cost more than the 'base load' systems, so they are only turned on when there isn't enough 'base load' power available.
Wind and Solar don't fall into either of those categories because they are really expensive and can't be turned on when extra capacity is needed.
They need to transmit the power long distances to mitigate the power storage issues associated with wind power. Wind turbines tend to produce 50% of their overall electricity in just 15% of their operating time. This means that if you build exactly enough windmills to power a city those windmills will be producing too much power 15% of the time and not enough power 85% of the time.
If the windmills are producing too much power that power can be transmitted to other more distant cities, and when the windmills aren't producing enough power the city can get power from windmills that are further away. But this requires more power lines to be built.
The only other way to deal with the intermittent nature of wind power is to build more windmills and find a way to store the electricity, which would cost more that building the extra power lines.
They could start storing energy thermally:
Give houses a large tank of water. In the winter heat the water when there is an electricity surplus, then use the hot water to heat the house. In the summer cool the water when there is an electricity surplus, then use the cold water to cool the house.
That would be a very environmentally friendly and almost 100% efficient way to store the energy. It would be much cheeper than batteries or any other storage method. And when you consider that 80% to 90% of domestic electricity is used for cooling or heating it would go a long way towards dealing with the problems of storing renewable energy.
So you think McCain should offer no help to people who want to support him instead.
Interesting campaign strategy.
I guess the spell checker can't protect me from every kind of typo. Fortunately that sentence is still accurate. That could have been embarrassing.
... but most of it goes back into the atmosphere when the lawn is cut.
That really depends on what the homeowner does with the grass after it is cut. If it goes in a land fill most of the carbon probably stays underground. If if goes into a compost heap then more of the carbon goes back into the atmosphere.
Although I personally think laws waste a lot of resources (especially in LA where I live).
The last launch failed because of a stage separation problem too. It seems to me that stage separation is one of those things that they can't realistically test on the ground, so it's impossible to verify that a design will work reliably without actually launching the rocket. Maybe they should consider copying the stage separation mechanism of a successful rocket to avoid having this happen on their next launch.
The announcer said there was an anomaly. I think that's market speak for 'it blew up'.
I turn the 3G off if I'm going to use the phone for a long time without charging it. I think the main reason the iPhone has battery problems is because people use the web on it more than people do on other phones.
For instance I couldn't even read the slashdot main page on a windows mobile pone, but on the iPhone I am constantly checking slashdot including reading the articles and comments.
In the example above he probably gets good battery life because he only uses if for email. If I only use the email on my iPhone battery life isn't a problem.
I never said that I thought they were are on the same level. But they both deliberately make life harder for people who disagree with them. Those kinds of tactics are stupid because they don't win anyone over to their side, and make people who were neutral see them (and the entire animal rights movement) as unreasonable.
...you're probably a racist too.
You need to take a deep breath and calm down.
It looks like the FSF saw the tactics of PETA and the ALF and somehow liked what they saw. What a bunch of geniuses.
The cost of uranium will shoot up. But cost of uranium is only a small fraction of the total cost of nuclear power, so even if the cost of uranium increased to ten times what it is today the cost of nuclear energy would only increase a small amount.
Ya, I am a Realtor, if you have a question about homes ask me, my advice is always free.
What exactly do realtors do? Why would I want to use a realtor to sell a home rather than listing the home myself, and what is the benefit of using a realtor to find a home rather than just looking through the listings myself?
I'm not actually planning on buying a home any time soon, but I'd like to know. Usually I prefer researching major purchasing decisions myself, rather than trusting a salesperson.