Answer
They are more expensive than other energy sources.
Answer
All energy sources have considerations of cost, availability, and attainability (which is itself determined by technological and non-technological limits). Solar power is 'free', but the devices to collect it are expensive compared to the power they deliver, thereby making solar power expensive. There are also a limited number of locations where it can be collected. Hydroelectric power is 'free', and the devices to collect it are cheap, but the number of locations at which it can be collected are few in number (most are already being used). Geothermal power is 'free', and collecting it is moderately priced, but there are technological constraints to how well the energy can be collected, and there are few places where it can be collected. Wind power is 'free', and not free. The devices used to collect it are moderately expensive, but wind farms need more traditional power sources (typically fossil fuels) as back-ups, which increases the costs and reduces the efficiency. Like solar, there are also a limited number of places where wind farms are practical. Agri-power or bio-fuels must be grown, and are not 'free'. While converting agricultural products into fuel is rather simple, it is using food for fuel, which creates a competition between feeding people and feeding cars.
== There's a documentary film called "Who Killed the Electric Car?". It's about a company that started selling electric cars, until the US Government, oil companies and other powerful people conspired to put a stop to it. (But I haven't seen it myself.) == The typical middle class US home grid tied solar installation can cost between $25000 and $40000 out of pocket installed. The federal tax credit is limited to a lifetime max of some $2000. Some state and local tax credits are available but not as many as could be out there. The typical home wind turbine runs about $25000 to $35000 installed and you have to get a tower permit to install it which are denied in many suburban settings. There is also no legislation in place to ban home owner associations from having in their bylaws that you can't put up a wind tower or install solar cells on your house if one of your neighbors doesn't like the look of them. - This is of Jan 2009 and hopefully will change. So - it's almost pure cost. Most people in the US do not stay in a home long enough to save the money in utility bills to pay for such a pricy installation. Substantial improvements in solar cell technology will bring these costs down a little over time and hopefully the federal tax credit will be raised to further fill the gap. It is a matter of being able to afford your environmental convictions.
there arent any.
Some people say it is costly to maintain and change the battery banks. Others say that the solar panels will not provide the average demand for a year. I know that many power company's and big name ones will not allow this because they will lose money. The whole issue starts off with money and I bet if you and I started a power company we would not want to lose money to solar powered homes.
Albert Einstein did not prove the existence of atoms himself; the existence of atoms was already widely accepted within the scientific community before his time. Einstein's work focused more on explaining the behavior of atoms and molecules through his contributions to the theory of Brownian motion and the photoelectric effect.
No, pennies are made from a combination of metals that are not magnetic, such as copper and zinc. Therefore, a penny will not stick to a magnet.
Radio waves have the lowest frequency and longest wavelength there arent any sub-catagories it just goes (lowest to highest in frequency) Radio wave, microwave, infrared, Visible light, ultra violet light, x-ray, then gamma ray with the shortest wavelength and highest frequecy
Rocks arent renewable
because we arent gonna run out of water any time soon
Virtually all minerals and rocks are considered nonrenewable in normal human definitions of time. The rate at which most minerals and rocks are being used far outstrips the abilities of natural processes to renew them. In geologic time, some rock and mineral resources could be considered renewable. Others, however, would not be renewable after any period of time, due to the unique circumstances that led to their initial formation.
ur in bartos arent u
i think they can if they arent happy,full of eating,there energy is low that is my answer
Sensible Energy, Latent Energy, chemical energy, nuclear energy, mechanical energy, internal energy, and a LOT more. Well, these arent the BEST types of energy but.. yeah...
Wind turbines arent that pretty...thats the only downside
Natural resources found on Antarctica aren't used often because there have not been large enough quantities found there worth exploiting
ur in bartos arent u
because you arent using as much energy making your muscles contract for movement
Force is the rate of exchange of momentum, while energy is something that is conserved. While they are different, they have a close relationship. Energy is what you get when you apply a force over a distance. Specifically, Energy = Work= ∫Fdx. If the force is constant then, Energy = Work = F*Δx
Why arent plastic degradble