is wind energy a form of nonrenewable energy? How do you know?
368898
It is renewable since warmth from the sun generates new wind all the time.\n\nThis is the opposite of oil.  Oil takes so long to produce that we use it up much faster than it is created in the earth.  We can actually use up all the oil.
478495
If someone does then they haven't told me.  As for self sustaining energy, the second law of thermodynamics forbids any such thing from existing.
577723
solar energy to create heat and use that to turn turbines(as in a hydroelectric the force of water turns turbine), windmills use the wind to wind the huge fans and the mechanical energy to wind turbines to create electricity. states like california, new jersey and new york use these kinds of technology.
72562
Hydroelectric: moving water from natural or artificial waterfalls powers turbines.\n\nSolar: Special reflective surfaces called photovoltaic convert the sun's radiation into energy, used to power turbines.\n\nWind:  Large turbines are pushed by the movement of the winds; resemble giant windmills.\n\nOil, Natural Gas & Coal (fossil fuels):  Are extracted and burned to power generator turbines.\n\nNuclear (fission): The power of the atom is harnessed as atoms are split apart and the resultant energy used to power turbines; buildings marked by iconic hour-glass-shaped cooling towers.\n\nBiomass: The buring of biologic materials to power turbines.\n\nWaste-to-Energy: the burning of waste materials (such as trash) to power turbines.\n\nNuclear (fussion): Still being developed; fusing atomic nuclei together and capturing the resultant release of energy.
1161674
Yes, you can, or more usually they turn themselves off when the wind gets too strong.   The power generated from the wind goes up as the cube of the windspeed.   So a 40 knot wind doesn't generate twice as much power as a 20 knot wind but 2x2x2=8 times as much.   So a fairly strong wind is too much for a wind generator to handle, and to prevent damage it automatically feathers the blades.   That is, it turns them parallel to the wind, so they don't turn.
1005187
At its simplest, a generator involves a spinning object inside a coil, and produces electricity.  It's tempting to think that if there were no friction, that the spinning object would turn forever always generating electricity, but that's not the case.\n\nWhen energy is extracted from the generator, it is because the generator is producing a current in its coil.  This current in the coil creates a magnetic field that actually slows down the spinning object.  Friction isn't the only force slowing down the system, it's not even an important force.  The important force is this electromagnetic braking force which arises as a direct and unavoidable consequence of the extraction of energy from the generator.
613947
Wind power plant output depends on wind speed. Such speeds cannot be accurately predicted over daily periods because the wind fluctuates from minute-to-minute and hour-to-hour. Consequently, electric utility system planners and operators are concerned that variations in wind plant output may increase the operating costs of the system. This concern arises because the system must maintain balance between the aggregate demand for electric power and the total power generated by all power plants feeding the system. The operators' concerns are compounded because unlike conventional power plants that are generally under their control and thus are dispatchable, the wind plants are controlled by nature. \n\nIt should be understood that the key issue is not whether a system with a significant amount of wind capacity can be operated reliably, but rather to what extent the system operating costs are increased by the variability of the wind.
103558
Kinetic energy is almost never conserved. There is friction, and conversion of kinetic energy to potential energy, for example.\n\nI think you are referring to conservation of energy, not kinetic energy. The law of conservation of energy is allowed to be violated but only for very short periods of time, by the Heisenberg Uncertainty Principle.
1125393
hey men first know wat is a turbine.\nA turbine is a prime-mover used to provide the mechanical energy required for the generator.\nPrinciple of generators:\nwhenever a flux linking in a conductor changes there is an emf induced in the conductor.\n\nhere the flux is provided initially by a battery or some electrical source and the mechanical energy is provided by the turbine.\n\nIf u see the Mechnical energy from the turbine is converted into electrical.\nRemember energy can be converted from one form to another.This is the basic law.
808092
Gravity is a form of kinetic energy.  The sum of the vectors for any gravitational system is always zero.  So, energy is neither created or destroyed.\n\nBTW.  Mass also has to be taken into account.  The destruction of mass in the sun is what created the radiant energy the composes sunshine.
388410
Alternative forms of energy, some which can be used today. Solar, Wind, Water etc.
970194
It is a non-renewable fossil fuel.  Oil and natural gas are also fossil fuels.
722751
That's not renewable. You just demonstrated that perpetual motion is feasible! Hello Nobel! Can I get in on this?
610297
There is not enough wind power being generated for everyone who might want to buy it. And I would be suspicious too. How do you really KNOW that all your electricity comes from wind? Just because the electric company says it does? And you believe them? Wind power is just put on the power grid with all the other electricity, so it is all mixed up. You are depending on accountants at your power company to correctly calculate, second by second, that all the power from wind entering the network equals or exceeds all the power being used by customers paying extra to get wind power. I am not sure I trust them to do that.
1173545
It is renewable; We are always going to have waves.\nIt is quiet.\nIt does not take up land.\n\nTidal Power is a distinct source in itself. (See both sites)
1160940
Positive energy is the only kind we know. So the question you're asking is "Is energy easily made kinetic?" To which the answer is to hand you an electric motor.
948920
All rotating electrical machines can be classed as either "motor" or "generator". The definition is based on the direction of electrical power flow. A motor requires electrical power to provide rotation (and hence useful torque); a generator is driven by an outside torque source to produce electrical power.\n\nFor a machine to work, there has to be a magnetic field created to transfer the mechanical power to/from the stationary portion to the rotating portion.\n\nFor the case of an induction generator, an outside force rotates the shaft of the electrical machine. (You can assume here that the rotor has been magnetized through the use of an external capacitance circuit to provide discrete magnetic poles.) The rotation of the magnetic field, through mechanical means, induces a current to flow in the stator winding. Since the winding is a resistive path, there will also be a potential developed.\n\nThe output (volts and amps) will both be sine waves, operating at a frequency dependent on the rotational speed of the rotor and the number of poles.