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Windmills
- Kristin Shrader-Frachette classifies energy generation technologies as following either hard or soft paths. (She attributes this distinction to Amory Lovins.) “The hard path is centralized, capital intensive, large scale, complex, and energy intensive.” On the other hand, “the soft path is characterized by decentralization, smaller capital investments, small-scale organizational structures, and less complex, labor-intensive technologies.”
- The windmill project, currently under debate in Puerto Rico, seems to have a foot in each. In its earlier phases, windmill technology walked on the soft path with decentralized ownership, small scale operation, low capital investment, and simple design. But the plan set forth by a private company to build a windmill farm in Puerto Rico has been met with local opposition that seeks to locate it on the hard path.
- The windmills are to be built on a plot of land adjacent to the Dry Forest of Guanica, a fragile nature preserve under the protection of the United Nations and the Puerto Rican government. Some fear that the windmills would kill birds from the many endangered species that have sought refuge in the preserve.
- Others are concerned that the company proposing to build the windmill farm cannot be trusted to remain focused on windmill technology; they fear it will be used as an excuse to industrialize the Guanica/Ensenada areas with harmful environmental and social impacts. Industrialization would disrupt a way of life for residents that dates back to the sugarcane plantations that operated until the early 1970’s.
- The public hearings carried out on the project by the Puerto Rican government were poorly publicized and held in an exclusive resort complex located on the far side of the island, a good day’s drive from the Dry Forest of Guanica. Those already concerned about the environmental impact of the windmill project, now added concerns about their rights of participation and social justice.
- “What,” they ask, “are public officials trying to hide?”
Gas pipelines
- Puerto Rico depends almost entirely on petroleum to fuel the plants that produce the island’s electricity. In 1992, a project developed by the private company, Cogentrix, to produce electricity and sell steam as a byproduct using cheap and widely available coal was defeated by groups in the Mayaguez area concerned by the plant’s environmental impacts. Both the proponents of the plant and the electric authority predicted chronic shortages and black outs by the turn of the century. These predictions have turned out to be true.
- Moreover, the environmental impact of the oil-dependent generating plants combined with the instability of the world oil market has brought the energy crises to Puerto Rico. The EPA has ordered the Puerto Rico energy authority, called the
Autoridad de Energía Eléctrica (AEE) , to reduce its dependence on oil for the production of electricity to below 50% by the year 2010.
- To comply, the AEE has turned to natural gas and has begun the construction of a pipeline from the coastal region near Penuelas to electricity plants on the other side of Ponce. The technology surrounding natural gas is sound, safe, and clean. But the location of the pipeline and the environmental and social impact of its construction has caused damage in largely poor communities.
- Residents interviewed state that they were not properly informed that the pipeline would be situated so close to their homes or that the construction would have such a grave impact. They claimed that they were not able to participate in the public hearings held on the pipeline and have been forced to bear an unjust burden of its social and environmental costs.
- Does the use of natural gas delivered to electricity generating plants by means of underground pipelines represent good, sustainable environmental decision-making?
- What should the AEE and the Puerto Rican governmental officials have done differently to anticipate better the social justice concerns of those living near the construction sites of the pipelines?
Questions & Answers
Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
what is the change in momentum of a body?
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
physics, biology and chemistry
this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you.
Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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Source:
OpenStax, Civis project - uprm. OpenStax CNX. Nov 20, 2013 Download for free at http://cnx.org/content/col11359/1.4
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