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Nuclear or any other source that produces electric isn't going to do much for oil dependence for quite some time until the vehicle technology becomes available that can be used for more than running errands, short commutes etc.
Extremely said, but they can't understand your words. None of them have read the more than one link here that tells the story as it is now.
Yes. Vehicular technology needs to progress quite a bit more. The last I knew, wind energy wasnt used for vehicles.
Nuclear power can replace the wind mills.
Nuclear or any other source that produces electric isn't going to do much for oil dependence for quite some time until the vehicle technology becomes available that can be used for more than running errands, short commutes etc.
It depends on the region. In the US that is more of a problem than in Europe or Asia where people use trains for longer distances. For city traffic electric cars could become an alternative. It all depends on how the electricity used by them is generated. Modern combustion engines are cleaner than some conventional power stations.
My last physics classes were a long time ago, but as far as I remember kinetic energy is related to thermal energy. One can see that with friction
Then again, maybe the rotor blades slow the flowing air down and thus the air is not removed as fast as it arrived, thus the air gets compressed, raising its temperature
The wind is originally generated by pressure differences created by thermal energy from the sun. But once the air is moving, a wind turbine merely slows it down and changes it into mechanical (rotational) energy. That then creates heat (from the friction inside the mechanism) and electricity in the generator. But the change in air temperature is minimal, the energy came from its change in momentum.
A similar analogy can be seen in your car. Energy from the fuel is converted to mechanical energy by the engine. But when you step on the brake, that mechanical energy is then dissapated in a different form (friction/heat by the brakes), not coverted back into its original form i.e. back into gasoline - I wish! .
not coverted back into its original form i.e. back into gasoline - I wish! .
Technically that is how these hybrids and diesel locomotives operate. A generator provides braking power which is converted to electric and stored in a battery.
Technically that is how these hybrids and diesel locomotives operate. A generator provides braking power which is converted to electric and stored in a battery.
With a little bit lost as waste heat along the way. But I know what you are trying to say. However my point is that even in the hybrid, the energy is not converted back into it's original form (hydrocarbon bonds inside of a fossil fuel), but to some other form entirely. Just as the energy extracted from the wind isn't converted back into a thermal gradient after passing over the turbine blade - it's just moving slower.
To carry the car analogy to the extreme - a moving car doesn't cool off by stepping on the brakes either!
To carry the car analogy to the extreme - a moving car doesn't cool off by stepping on the brakes either!
Hmmm, if Lockheed Martin produced a car called the SR-71 it would.
How much heat would a wind mill spinning at mach 3 generate?
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