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» Browse Science and Environment Term Papers
Bernoulli Principle
Number of Words: 579 / Number of Pages: 3
... over the wing, and S for the area of the wing when viewed from above or below.
As the air flows over the wing producing lift, it grabs onto the wings surface and causes drag. Drag can be measured by the equation D=Cd 1/2 (pV2)S, much like the lift equation. The drag coeficent Cd is found, again, by determining the shape of the airfoil and then finding the angle of attack. Drag is less than lift up to a certain angle of attack. After that, the air encountering the surface of the wing is either pushed off or deflected in a way to cause turbulance.
So, what does lift and drag have to do with airfl ...
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Limonene And Its Uses
Number of Words: 1780 / Number of Pages: 7
... document.
This fact sheet summarizes the information in the RED document for
reregistration case 3083, limonene.
Use Profile
Limonene is a naturally occurring chemical which is used in many
food products, soaps and perfumes for its lemon-like flavor and odor.
Limonene also is a registered active ingredient in 15 pesticide products
used as insecticides, insect repellents, and dog and cat repellents.
Pesticide products containing limonene are used for flea and tick
control on pets, as an insecticide spray, an outdoor dog and cat repellent,
a fly repellent tablecloth, a mosquito larvici ...
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Oil Spills
Number of Words: 1362 / Number of Pages: 5
... It's simple. It's crude. It's oil.
This scenario is nothing but a harsh reality that most people were unconcerned about until the disaster of the Exxon Valdez. The Valdez spill, tragically unnecessary though it was, has served as a laboratory for scientists, in which they can study the effects of oil pollution and experiment with new cleanup methods. It has also served as a costly lesson in the pitfalls of petroleum shipping and the shortcomings of emergency plans. It is time for us to learn from such an expensive lesson, and learn the horrid truths behind oil-spills; its cause, its effect and ...
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The Orgins Of Atomic Theory
Number of Words: 1881 / Number of Pages: 7
... tools that we hope can prove or disprove
various hypothesizes, to further our understanding of any number of things. We
divide science into categories and then sub-divide it even farther, until we can
hide the connections and pretend that they really are separate. The difference
between psychology and physics is not as extreme as one would believe if they
were to read their definitions. Though the means are different the goal is the
same for all science: to increase our understanding of our earthly domain, and
to improve ourselves. The Greeks created this guiding principle more than two
thousand years ...
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The Discovery Of The Electron
Number of Words: 61 / Number of Pages: 1
... mass is Me 9.1 x 10 -28 g, about 1/1836 of the mass
of the proton or neutron.
The charge of the electron is -e = -4.8 x 10^-10 esu ...
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Glass
Number of Words: 1557 / Number of Pages: 6
... chemical, optical and thermal properties. is an intriguing substance in the way that the moment you change the percentage of one of its components, the itself is different. (Education Dep. Properties: Chemical). Often, it can even be classified as a different type of . Commercial es are found in six basic categories, soda-lime , lead , borosilicate , aluminum silicate , ninety-six percent and fused silica .
Soda-lime is the most common and least expensive . Approximately ninety percent of all is soda-lime . Soda-lime contains between sixty and seventy-five percent silica, twelve to eig ...
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Genetic Engineering
Number of Words: 390 / Number of Pages: 2
... insulin, and human growth hormone in commercial
quantities; - existing antibiotics by more economical methods; - new kinds of
antibiotics not otherwise available; - plants with resistance to some pesticides,
insects and diseases; - plants with improved nutritional qualities to enhance
livestock productivity.
Methods:
- Manipulation of the Gene pool, which is related to Hybridization which is the
breeding of species but the species are not the same but they are related.
- Chain reaction is the production of many identical copies of a particular DNA
fragment.
- The utility of cloning is important, i ...
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Minerals
Number of Words: 280 / Number of Pages: 2
... major elements such as
calcium, magnesium, iron, iodine etc. Then the trace elements such as copper,
manganese fluorine and zinc.
Once of the most important is calcium. Calcium is used to build up your
bones. It also helps to keep your teeth strong. About 90% of all calcium is
stored in your bone's. It also helps with mussel contraction. Milk products such
as milk, cheese and other stuff it the primary source for calcium. You should
have about 1000mg's a day.
Magnesium is also another important mineral. This mineral is in most
foods. It is very important in containing healthy mussel cells. It also ...
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Alternativly Powered Cars
Number of Words: 412 / Number of Pages: 2
... is used to power the vehicle as it reaches the higher speeds where the added horsepower is needed. Usually the speed at which the gasoline engine starts is in the 30 mile per hour range. Even as the gasoline engine runs the electric motor continues to provide power for the vehicle. This vehicle combination in my opinion is beneficial economically and environmentally.
There are many benefits for the hybrid vehicle. The price of hybrid cars present day is near seventeen thousand dollars. Some schools have their own homemade hybrid vehicles. Their vehicles usually average about 40 mpg. In the automotive ...
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The Effects Of UFO's On People
Number of Words: 1089 / Number of Pages: 4
... secret. (Craig, 917) When the report was later declassified it
showed that 90 percent of all UFO sightings could be easily explained. Most of
the sightings turned out to be celestial objects, such as stars or bright
planets like Venus, or atmospheric events such as auroras or meteors falling
through the atmosphere. Many other sightings turned out to be objects such as
weather balloons, satellites, aircraft lights, or formations of birds. Often
these sightings were accompanied by unusual weather conditions. Only 5.6
percent of these cases were not explained. Testimonies by people are often very
inac ...
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