Against Wind
The speed of an airplane in still air is 258 aircraft Km.the travels 832 kilometers from the wind and 1919 km with the?
The speed of an airplane in still air is 258 aircraft Km.the travels 832 kilometers against the wind and 1919 km with the wind in a total time of 19 hours. What is wind velocity? I'm stuck to help this please!
The first thing you need to do is to get the units straight. Speed is distance per time unit, so it is 258 kilometers speed. 258 km / hour speed ISA suppose he meant the plane's velocity is km / h vs km in reported if the total time in air is 19 hours, you can say that the X-hour plane journey pass "with the wind" and (19-x) hours "against the wind. total distance is 1919 +832 = 2751 km Average speed is km/hour- of 2751/19 = 145 Note that the average speed is below zero wind speed from the aircraft, the plane takes a long time against the wind We assume that wind speed is constant, so if we call the speed and the wind, then the average wind speed against the (258-y) The average wind speed is (258 + Y) So you can write an equation for the distance = (258 + y) * X + (258-y) * (19-x) = 2751 km route, or you can write an equation for speed for each leg (258-y) * x = 832 (258 + y) * (19-x) = 1919 You also assume that Y must be less than 258 (common sense) can be solved by iteration or the creation of a more elegant solution, if completed at 1 or 2 significant figures we obtain y = 202 km / hour (time against the wind) is 14.82 hours the time with the wind speed is 4.18 hours against the wind (258-202) = 56 km / distance of an hour against the wind = 56 * 14.82 = speed of 830 km with the wind = (258 +202) = 460 km / h the distance with the wind = 4.18 * 460 = 1923 km in total distance traveled = 2753 kilometers (close enough iterative solution)
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It's safe to say that wind energy is essentially free. These are the effect of warming the Earth's surface by the sun. This heating effect is uneven due to the uneven surface of the earth. Therefore, results in air currents that move between the cooler areas and warmer areas. This is the wind blowing and causes leaves moving wind turbines and thus generate electricity.
Business model of wind power: financing wind energy
In the eighties the installed wind power generators normally showed a cost of 30 cents per kilowatt-hour. This in itself was a very attractive price compared to conventional energy generators that already existed. However in the last twenty years, prices fossil fuel prices have risen and wind power generation have declined. Today we see a reduction of almost 80 percent in the cost per kilowatt-hour Thanks to these factors and the latest high wind turbine generator technology. 5 cents per kilowatt-hour is a common phenomenon now. This is clearly very advantageous rate in which to pay for the electricity itself.
Other advantages for wind energy compared to fossil fuels. Energy is easy to harvest wind farms and ranches, which have an abundant supply of this source of free energy. Wind energy is available to any person living in an area where the wind blows. That there is neither necessary nor possible to import from foreign countries. This is a big difference compared to fossil fuels where the importation of large quantities of these fuels is normal if unfortunate incident. Fossil fuels, of course, are also highly polluting and not a renewable source of energy.
To ensure that wind power generation can be done in a cost effective and efficient manner, you need to select a site with certain minimum criteria. The wind speed, for example, which is directly related to the amount of electricity they can generate, must be at least 5 meters per second in this case.
Improving the financial statements of more wind power
A developer of wind energy, implementation of the financing of public services to wind power plants and wind power can be generated for as low as 5 cents dollar per kilowatt-hour of a standard power plant of 50 MW. However, this price per kilowatt-hour can drop to only 3.5 cents which is a reduction of 30 percent. The wind power generation in this sense is even more attractive compared to gas stations and that is clear that the power of wind generation costs continue to decline in coming years.
Save money and save the environment at the same time!
The issue of environment, of course, is very important in wind energy and other renewable energy source. Wind power is clean. This is, in comparison with carbon emissions from coal power plants, which release very small dust particles in the atmosphere. These dust particles can have a serious effect sometimes fatal in humans due to cardiovascular and respiratory diseases that can cause. They can also lead to higher rates of infant mortality for the same reason. Coal plants, of course, are also responsible for the production of greenhouse greenhouse and acid rain phenomenon. The use of coal power plants can be clearly linked to worsening both a visibility in the atmosphere Earth and global warming.
Wind energy should now be launched with the long-term power generation contracts to strengthen and consolidate market acceptance of this source of new and renewable energy. The advantages that should allow this to occur include the minimum cost of the life cycle for power plants wind, as they have minimal operating expenses and the purchase of fuel is not necessary. Wind energy can be used and reused, but not contribute to any pollution generated by conventional fossil fuel plants.
About the Author:
Jim Martin is a researcher, inventor, home energy consultant and author of the #1 best-selling e-book, “Earth 4 Electricity- Renewable Energy Made Easy”. To Learn More about Jim Martin´s Unique Step By Step Solar and Wind Power System Visit:
Earth 4 Electricity
. For further information visit:
Facts about Wind Energy- REVEALED
Article Source: ArticlesBase.com – The REAL Cost Of Wind Energy
Bob Seger – Against the Wind
