Abstract
This essay explains the basis of Quantum Mechanic Theory of the atom, which describes the behavior of electrons in atoms & molecules. The author examines this theory and provides a detailed analysis of it.

From the Paper
"The Quantum Mechanics Theory describes the behavior of electrons in atoms & molecules. Quantum Mechanics is also referred to as Wave Mechanics. The theory of quantum mechanics tells us that in the atom, electron waves are standing waves. This theory was devised by Max Planck in 1901. He stated that light is emitted by the atoms of a luminous body in separate packets or bundles of energy called quanta or photons. One or more of the electrons revolving about the nucleus of an atom can be made to jump from one orbit to another. As they do so one or more photons are emitted. This energy radiates from the luminous body as electromagnetic waves. The energy content of a photon determines the length and frequency of the wave. Wave mechanics views the probability of finding an electron at a given point in space."

Tags:chemistry, physics

Abstract
This paper explains how a nuclear reactor produces energy. The paper includes a discussion of fission, radioactivity, types of reactors and how they produce electricity.

From the Paper
"All modern nuclear reactors operate on the principal of nuclear fission. Nuclear fission is a process in which the nucleus of an atom is split when it absorbs a free neutron after a collision occurs between the atom and the neutron. Splitting the nucleus of the atom releases large amounts of nuclear energy contained within the nucleus. Once the nucleus of the atom is split, multiple neutrons are released which are used to split nuclei of other atoms, causing what is known as a chain reaction. The chain reaction will continue as long as an average of one neutron per fission is absorbed by a nucleus. By harnessing and manipulating the energy that is released, other types of energy can be obtained. The power developed by nuclear fission has been used by man to create, as in the driving of an electric generator and for propulsion, as well as destroy, as in the release of atomic explosion. Whereas the fission in a nuclear reactor is precisely controlled to prevent a nuclear meltdown, the fission in an atomic explosion is not controlled and the shock wave produced by the splitting atom and its resulting chain reaction is equal to several thousand tons of TNT."

Tags:physics, nuclear, energy, fission, reaction, radioactivity, protons, reactors, electricity

Abstract
The paper addresses the question of whether the world's energy resources are becoming scarce with the impending increase of the human population. This paper analyzes the current energy resource uses, provides calculations of energy output and compares them with each other. A background of the various energy resources is given as well as an introduction to Nuclear Energy. Fission/Fusion technology is also brought up throughout the paper. An explanation of the Fission/Fusion theory is provided on how this renewable resource works.

From the Paper
"With man's leap into technological advances, one would think that the boundaries are endless. The human race has allowed to progress for over hundreds of thousands of years. Especially in the late centuries of history, mankind has excelled immensely in achieving technological success. From the discovery of electricity, to the creation of the internal combustion engine, modern society has come to a time where ceaseless change exists in everyone's lifetime. Everyday man takes another step into the ladder of intellectual evolution. These advances still cannot guarantee happiness among society. For all of these things are dependent on one thing, energy. Energy is needed to maintain life in all things, from the plants of the Amazon forest, to the fuel burning inside of a Toyota Camry. Without it, all living things would cease to exist, including the humans who created this ever growing technology. One might speculate that with the extreme rate at which the population is increasing, all the resources on earth would become scarce. But an energy crisis is hardly anything for a person to worry about, for humanity has taken a step into the discovery of nuclear power."

Tags:astronomy, environment, physics, technology

Abstract
This paper explains that going back in time to visit historical times in real life may sound like the work of an H.G. Wells novel, but physicists are getting surprisingly closer to actually being able to travel in time, as demonstrated by the theory of relativity, light speed, paradox theories, and the work of modern scientists as they search for the secrets to the 4th dimension. The author points out that Dr. Stephen Hawking's theory and the recent discovery of black holes show the potential for an area where the laws of relativity may not exist. The paper relates that Dr. Ronald Mallett at the University of Connecticut has developed an idea that present-day people can communicate with the past by sending electrical particles through a spiral series of laser beams to accelerate them to the speed of light.

Table of Contents
Introduction
What Is Time Travel?
The Fourth Dimension?
Time and Space
Theories Past and Present
What Is Matter?
Applicable Relativity Theory
We Cannot Get There from Here
Modern Research of Time Travel
Newton
Einstein
Stephen Hawking
Paradox Theories
Time Travel Mutual Fund
Conclusion

From the Paper
"The Theory of Relativity states that fundamentally our ideas of space and time. We must accept that time if not completely separate from and independent of space, but is combined with it to form an object called space-time. Newton developed laws of motion that until Einstein were not contested. Einstein expanded this law in his special theory of relativity, which states that mass increases as speed approaches the speed of light. We must remember that the more mass we have the larger that mass will become as light speed is reached. The speed of light and time space is closely related. It has been said that light speed is the key to time travel. At this time the theory of relativity limits our ability to move mass at the speed of light, but as I will explain, there are current theories that will allow moving electrical energy in the form of data back in time."

Tags:wells, hawking, einstein, mallet, laser

Abstract
This paper is an examination of nuclear energy as a power source, focusing on the environmental impacts associated with producing and using the fuel. The history of the development of nuclear technology is briefly discussed. Then some of the positive attributes associated with nuclear power are given, as an argument for having pursued this technology despite its many uncertainties and pitfalls. Next, the many drawbacks commonly associated with nuclear power are presented, including the problem of radioactive waste. The paper concludes with a short look into what the U.S. government is doing to address the situation created by the nuclear industry and the areas in which it falls short of solving the problems at hand.

From the Paper
"Safety concerns have rightly plagued the nuclear industry since its inception. On one front, there is the threat of nuclear proliferation, which has already become a reality with feuding countries like India and Pakistan, both possessing nuclear capabilities. This poses a major threat to the global population as well as the global environment. If even one of these weapons were to be detonated, the immediate impact on human and other biological life would be devastating. But the long term effects to the ecosystem are assumed to be equally as grave and ruinous."

Tags:atoms, reactor, uranium, Three, Mile, Island, Chernobyl

From the Paper
"Background
The Big Bang Theory is an explanation for the beginning of the universe. The universe today is expanding, as can be seen in the way all matter is moving outward. Tracing this movement back through time takes all matter to a single point, leading to the view that at one time all matter was concentrated in a singularity which for some unknown reason exploded, throwing all material now seen in the universe outward from that central point. There are various corollaries to this theory, such as the issue of whether the expanding universe will continue to expand forever or will eventually reach an end point and fall back on itself. There are also various consequences of the Big Bang which can be used to determine if the theory has validity. A number of researchers have examined aspects of the Big Bang theory and developed ideas..."

Abstract
In order to make a judgement of the physics viability of nuclear power as an energy source for Australia, this paper explains how nuclear energy is produced, disposed of, sourced, and maintained in light of Australia's unique environment and population distribution. The paper discusses the efficiency of using nuclear energy as well as Australia's huge availability of uranium and its ample waste storage space. The paper concludes that nuclear energy is definitely a viable method of energy for Australia but recommends that stringent laws and regulations be made to enforce adequate training of nuclear staff to minimise the risk of disasters. The paper includes a diagram of how nuclear power is produced and a map of mining locations in Australia.

From the Paper
"Nuclear energy is generated by the fission of the uranium 235 isotope. U-235 is the ideal fuel for power generation because it is able to sustain a chain reaction and release energy. Uranium for fuelling nuclear generators is mined in Australia as low-grade ore. Only 0.3% of this ore is pure uranium, and after crushing, chemical treatment and concentration, only 0.7% of this residual is the required U-235 isotope. In order to ensure an induced chain reaction is sustainable, this nuclear fuel needs to be enriched (i.e. concentrated) so that the U-235 concentration is approximately 5%. (Rapkins, Rossiter, Walding, 1999)"

Tags:uranium, fission, enrichment, isotope, radioactivity, chain, reaction, atoms, neutrons

Abstract
The purpose of this paper is to introduce, discuss and analyze the topic of gasoline prices in the United States and offer some insight as to why they are so high. Specifically, it answers the question "Do Americans really have a right to complain?" It also discusses European gas prices, and why they are higher than America's, as well as some alternative fuels that might help ease gas prices in the United States.

From the Paper
"American gas prices may be higher than we have ever encountered before, but they are much lower than gas prices around the world. American drivers are spoiled. They tend to drive large, inefficient vehicles, and then rant about the high price of gasoline. They drive long distances for work and play, using more gasoline per capita than residents of many foreign countries. American drivers also rely heavily on their vehicles, rather than using more efficient and fuel-friendly alternatives, like carpooling or public transportation. We depend too much on foreign oil, a resource that is non-renewable. We need to develop more alternatives to our dependence on gasoline by researching more efficient fuels and automobiles, like the hybrids that have recently been developed by Honda and Toyota, which use a mixture of gasoline and electricity to provide better gas mileage while using less gasoline. Our dependency on oil must stop, or one day, our children will wake up to world without gasoline."

Tags:crude, oil, SUV, automobile, OPEC

Abstract
The paper defines types of ballistics and goes into depth on terminal ballistics, velocity, and one-stop shots. The author discusses the effects and actions of the projectile upon impact of a target specifically the human body. What happens when a bullet strikes human flesh? Dismisses several theories in the field using FBI research.

From the Paper
"The study of the firing of projectiles, their flight and how they strike a target is called ballistics. There are several categories of ballistics including internal ballistics, external or exterior ballistics and terminal ballistics. Internal ballistics is concerned with the behavior of the bullet or projectile from the moment it is fired until it leaves the gun barrel. Exterior ballistics deals with the flight of a projectile after it leaves the barrel. One major effect of the bullet's flight is the pull of gravity, which causes the bullet to immediately drop after leaving the barrel and fly on a parabolic path. Terminal ballistics however, is concerned with when the bullet hits a target and the effects produced by that bullet."

Tags:criminalistics, forensic, range, science, velocity, criminal, justice

Abstract
The following paper aims to find the force required to move blocks of different weights across different surfaces, thus finding a value for friction and comparing the results with that of a textbook and recording any differences. The conclusion found in this paper is that friction is directly proportional to the weight force applied and is measured in terms of the coefficient of friction, represented by the Greek letter mu (m).

From the Paper
"The coefficient of friction is the ratio of the frictional force present and the normal reaction to the mating surfaces and is represented as,
m = Ff - Rn
Rn = Normal reaction, weight force
Fn = Frictional force
But may also be worked out by dividing the force required in Kg by the weight of the object. Eg the force required to move a 25Kg object is 5Kg so to work out the coefficient of the object we would divide 5 by 25 to give a coefficient of 0.2.
Because of this the surface area of the block is independent to that of the coefficient and is not needed when determining a value for friction.
The coefficient of wood against wood is 0.35 giving a relatively low value for friction whereas rubber against concrete is 0.8 meaning it would be hard to slide rubber on concrete. The coefficient can be greatly reduced if a lubricant of some sort is applied in between the surfaces as it forms a layer preventing the bumps on the surfaces rubbing together making it easier to slide the objects past each other."

Tags:equipment, human, error, molecule