Archive for September, 2009

Wednesday, September 16th, 2009

Terry Metcalfe asked: The gains in immature technology, an additional tenure for renewable technology, in new years have been extensive and have done it easier than ever to modify your home in to a immature appetite home. What usually is a "Green Energy Home"? It would be a chateau which ...

Tuesday, September 15th, 2009

Alex asked: Earth 4 Energy is a guide that teaches you step-by-step to build a homemade wind turbine and solar panel. By doing that you'll be able to save up to 80%-100% of your electric bill. Most people might be skeptical, so were we. However building you own green energy ...

What happens to the energy in living things when they die?

Monday, September 14th, 2009

Chris asked: I don't know much about physics, but I know that energy cannot be created or destroyed. So if this is the case, what happens to all of the energy stored inside, say, a person, if they were to die? Think about it, there's all sorts of like, emotional ...

How can both nuclear fission and nuclear fusion release energy?

Sunday, September 13th, 2009

smilinchick_21 asked: Coming from a chemistry point of view, we are familiar with the concept that making bonds requires energy, and breaking bonds releases energy. So, it follows that fusion should require energy, and fission release energy. However, from a nuclear point of view we know that they both release ...

What kind of energy does a windmill produce?

Sunday, September 13th, 2009

hearts_and_skulls asked: Also its probably a stupid question but does it use wind energy to make energy? And it doesn't matter what type of windmill it is just give me a couple of different types of energy it can produce. Please and Thank You!BERT

Thursday, September 10th, 2009

Andrew Oke asked: With today's rising energy costs, and no relief in sight, many consumers are looking to live "off the grid." Even with an initial investment that can be steep, the benefits make it much more economical in the long run.There are small and some not so small ways ...

Thursday, September 10th, 2009

L Vyas asked: It was good news for renewable energy industry when the congress passed bill to extend energy grants to 8 more years. Since then the renewable energy is growing day by day. Solar energy and wind energy are most popular application of alternative energy. Many people are relying ...

What are the potential energy and the total energy at time tf?

Thursday, September 10th, 2009

Brenda Y asked: At time ti, the kinetic energy of a particle is 30.0 J and the potential energy of the system to which it belongs is 11.0 J. At some later time tf, the kinetic energy of the particle is 16.0 J. (a) If only conservative forces act on the ...

Wednesday, September 9th, 2009

John Richards asked: e look at green energy technology it?s clear that two or more philosophies are at work here. There are major, often publicly-funded projects, such as offshore wind farms that use collections of turbines over 300 feet high and designed to provide enough green energy to run several ...

How much energy is needed to cause a fusion reaction in contrast to how much is released?

Tuesday, September 8th, 2009

Wolfgang asked: The fusion of two hydrogen atoms, for example, releases a large amount of energy. What I need to know is how much energy is needed to start this reaction: is it more than is released, less, or equal to it?TIM