Physics Essays

It processes a high nonlinear susceptibility. It also indicates that the material has high potential for nonlinear optic application. However, Donor-acceptor chromophores possessing a highly polarizable -conjugated system with highly

From the results obtained from the data sheet the muzzle velocity is supposed to represent the initial velocity of the yellow plastic projectile. It is evident that the range depends on the initial velocity i.e. The higher the initial

For symmetric objects the moment of inertia I am given by, where β = dimensionless fraction that lies between 0 and 1. For a rectangular block of dimensions, a × b × c has a moment of inertia for a rotation about an axis normal to a × b face and passing through the center of the object. The moment of inertia is affected by the distribution of mass.

Another characteristic of the mineral is the fracture characteristic; this is the ability of the mineral to break. Hardness is another characteristic of minerals; they vary from soft to the hardest one. Minerals also have different colors and different luster, which help them to distinguish each from the other.

Theoretically, electric potential is denoted by ΦE, Φ (Phi), or volts (V). In this case, one volt is equivalent to the electric energy (measured in joule)

Pushing it harder increases the frictional force so as to match the magnitude of the push. There is a limit to the magnitude of static friction, that eventually

The components of the pollution include nitrogen oxide and carbon monoxide. Thus fuel technologies and clean vehicles are methods to reduce this kind of air pollution, whereas cutting the use of oil by almost half in the next 20

Production of Acrylic acid starts with propylene being partially oxidized in a fluidized –bed reactor. Propylene is broken down to acrolein in the process of getting catalytic gas at an oxidation stage. The fluidized-bed reactor includes a packed-bed with a stirred tank that creates continuous flow reactors.

Econometrics itself means ‘economic measurement’. Its analysis has two principal purposes – to promote empirical content within particular economic theories and to subject such theories to potentially falsifying tests. Taking the first, with the French data as example, it can be said that economic theory holds that consumption should be directly proportion to income while it should be inversely so to interest and unemployment rates.

The author states that Rutherford's thesis helped guide the current thinking and has been credited with spawning many of Joseph Priestley's later experiments. These experiments would lead to the discovery of oxygen as the element needed for combustion and life and open more doors in explaining the composition of gases.

The accurate geological term for the park is Cuesta Verde with the only difference from Mesa being that Cuesta lightly dips in one direction, but Mesa directed to the south with seven degrees difference. Cuesta is actually made up of different mesas that are found right between the canyons, and though all proof has indicated that the park should be called Cuesta Verde the laws and convection of that area dictates that it should be referred to mesa Verde when illustrating the area.

The author of the paper state shat barriers to entry are created by firms so as to restrain other firms to enter the industry and remain in its monopoly position and enjoy super normal profits in the future as well. Despite this there are also barriers which are naturally created by the actions of large firms.

The human ear can detect waves ranging from twenty hertz to twenty kilohertz. Other animals have different ranges of sound detection. Dogs, for instance, can detect vibrations with a frequency higher than twenty kilohertz. The matter through which sound waves travel is known as the medium, and that includes a vacuum.

Optimizing design or studying the consequences of differences of fabrication situations on shape, size, deformation, and stress in the contact zone stipulates quite a big series of organized or haphazardly differentiated principal radii of curvature of the contacting surfaces. Such series can be distinguished and elaborated by a matrix whose elements are ordered quadruples of the four radii of each individual combination.

The lines of force of a charged spherical conductor are radial. The charge on the sphere acts as if it is concentrated at the center of the sphere and that that the surface of the sphere is just a number of points to charge. Let R be the radius of a sphere having to charge Q. The potential at a point on the surface due to the charge is Q/R.

Columbus found out for the duration of his second expedition to America concerning a game that was played by the Haiti nationals, in which balls of elastic tree-resins were used. The word rubber is derived from the ability of this material to remove (rub off) marks from paper, which was investigated by Priestley Joseph in the year 1770.

  Although bushfire is not common in some parts of the worlds but these play a significant role in environmental conditions in certain dry regions. The pollutants are several in case of bushfire including inorganic and organic compounds. The study here has been focused on the particulate matter (PM2.5) and their analysis using an analytical technique.

The rise in the concentration of these greenhouse gases result in the Earth getting warmer gradually. I agree with the fact that the Earth today is much warmer than it was a century years ago. “ Earth's average temperature has risen with more than one degree Fahrenheit (0.8 degrees Celsius) over the last century, and about twice that in parts of the Arctic” (National Geographic Society, 2011).

It examines how equations related to these principles can be used to improve the game of basketball or make decisions. Projectile motion equations can be used to determine optimal angle at which the ball can be thrown in order to score. Moment of force and stability can be used to calculate critical angle at which if a player tilt past, he or she falls.

Heat is everywhere. We always feel them; however, because of unawareness, we do not notice them. Ideally, heat is the transfer of energy from one system to another. A system is a term in Physics which means an “object”. Since heat is something that a system does not necessarily have, hence, it is the transfer of energy from one body to another.

The description will take one into the beautiful world of this lush green park which will compel one to visit this place as soon as possible. From its amazing history to its jaw-dropping descriptions, from its interesting geology to the services it provides to the enthusiasts, everything will be reported here. It feels as which you are touching the sky.

U.S. natural environment comprises of both the lowlands and highlands where forests characterize the latter regions. Consequently, this makes these regions much colder together with their surrounding plains, for example, the Northern American Rocky Mountains.

Energy is defined as the ability of one physical system to do work on other physical systems. Energy can neither be created nor destroyed; instead it can only be converted from one form to another. (White, 2009) There are various forms of energy such as mechanical, chemical, heat, potential, kinetic, electrical, electromagnetic energy.

This led to the increased urge to develop sophisticated and more reliable longitudinal determination methods. It was in 1610 after the discovery of telescopes where Galilee Galileo discovered four large moons in Jupiter (Sobel, 29). They observed that eclipses of the moon occurred in what appeared to be regular intervals.

These traditional systems of delivery were restricted to single-point delivery and 2-Dimensional plane deliveries which are not adequate for the highly complex contemporary requirements of delivery. In an effort to curb this menace, work has been done on a new system that has highly promising results.

The amount of charge increases steadily until the maximum amount of charge designed for the capacitor to store is reached. At this point (when an optimum charge has been achieved), the capacitor ceases to charge despite the increase in the voltage of the current flowing across the loop.

Compared to its closed-door policies until the mid-1970s, the liberalization it initiated has generated more business opportunities for entrepreneurs. When the government relaxed its price control and promoted foreign investment, the US started to invest in PRC beginning in 1979 after both countries establish diplomatic relations.

This area has some certain properties that distinguish it from other zones that do not support life. When looking at the properties of the Goldilocks Zone, it is the same as looking for conditions that can sustain life. These conditions include the presence of liquid water, suitable amount of sunshine, and a breathable atmosphere (Brian, 2011).

The gravitational force of attraction is described by Newton’s law of gravity. Einstein’s theory of general relativity describes the interaction between space and the matter within it. This theory provides an accurate description of gravity than does Newton’s law. General relativity predicts the existence of gravitational radiation.

Ethical concerns of these approaches, their pros and cons will be discussed in detail. Psychodynamic approach in psychology: theoretical assumptions Sigmund Freud is the founder of psychoanalysis and psychoanalytic theory and is often referred to as the founder of the modern psychology.

As crude oil is formed, it tends to migrate, but this migration depends on critical factors such as the permeability of the crude oil and the porosity resulting from its formation. Oil can only migrate if enough porosity has been introduced around the organic mass for transportation and permeability is suitable enough for movement.

The stem cells in mammals can be categorized into two main types i.e., the adult stem cells or the embryonic stem cells (Hook, 2011). The embryonic stem cells are isolated from the blastocysts inner cellular mass while the adult stem cells are located in several tissues where they function as a fixing system for the entire body, refilling adult tissues.

The arena is located in Hunt's bank in the City of Manchester and was a key factor in Manchester City’s bid to host the Olympic Games of the years 2000 and also 1996. The venue hosted the 2002 Commonwealth games. Basically, the arena is a huge sports complex with a 105 meters truss roof spanning its top.

It has also been established that they require reprocessing facilities if they are to fully burn wastes. Lastly, the excess neutrons used in reutilization are potential materials for making plutonium for weapons. A positive void coefficient is very common in sodium-cooled reactors. This makes them become a safety concern.

Weigh the wood block and record the weight in N. Set the block on the board with its largest surface in contact with the board’s surface. Through a pulley, attach the block to the weight hanger by a cord and place some weights on the hanger increasing the load to keep the block sliding slowly with constant speed.

is coefficient of friction, m is the mass, g is acceleration due to gravity Therefore in this scenario, F = 0.35*440*9.8 = 1509.2 Thus braking force = 1509.2N But F= ma Rearranging this we get Thus deceleration = = 3.43m/s2 s = Thus distance = = 6.25t m But t= 12.5/3.43 = 3.64s Thus distance = 6.25*3.64 = 22.75m Task 2 Question 1 Average angular velocity is 4200 + 360 = 2280rpm = 238.76rad/s I = = 12.5 * 0.12 = 1.5 Rotational Kinetic energy is = I?

Alexandria is located in the Commonwealth of Virginia, which is along the west side of the Potomac River. It is a high-income city due to its proximity to Washington, D.C. where many federal agencies and offices are located. Its population is only about 147,000 which translates to a population density of approximately 9,400 people per square mile.

Like other circuit breakers, ABCB also aims to maintain a high voltage arc gap that will withstand over-current and voltage, and prevent damage to the components. The high arc voltage is maintained at a level far greater than the supply voltage. For this objective, three techniques may be employed; cooling the arc plasma (which is air), increasing the length.

Space exploration has emerged as a very controversial subject, to the extent of wondering whether the controversy is inspired by genuine concerns, or by the unwillingness of some people to engage or wait for the tangible benefits accruing from space exploration projects.

The world's largest energy requirements including those of the US are currently being met through fossil fuels such as coal, diesel, gasoline and natural gas. The environmental and health impacts of fossil fuels are significant and include global warming, oil spills, pollution, acid rain, rising sea levels and many more

Thermodynamics on the same note is a branch of physics that deals with the transfer of heat on substances of various types and materials. This is a set of three laws each explaining the behavior of heat in certain materials. The basic thermodynamics variables are temperature, heat, and entropy. The three variables are physical quantities.

This paper explores the innovations in portal imaging to assert that the course of these advancements has been largely positive in assisting the attainment of the objectives of portal imaging. The paper employs the evidence provided by research and studies into the field to arrive at plausible conclusions, the effectiveness of procedures such as the implantation of radiopaque gold markers.

There are six geologic processes found on the planet Mars (aeolian, cratering, hydro, landslides, tectonic and volcanic) although not all of them are occurring at present. Only those of the aeolian (wind streaks and sand storms), cratering (erosion and degradation) and tectonic (in the Tharsis and Elysium regions) are seen at present.

The most prominent of them has of course been the view that science endorses, namely, the view based on cosmic science and biological evolution (Darlymple, 1994, p.1-20). The notion that earth is only a few thousand years old was a Bible-based assumption and was acceptable to the people of the pre-scientific era of human history (Darlymple, 1994, p.18-24).

The paper gives the information which was collected from scholarly articles and published books relevant to the subject. Wind is simply moving air or air in motion. In this research, the definition of wind is any amount of air moving in a definite direction or changing directions moving at speeds less than 5 miles an hour. Breezes and tornadoes are forms of moving air travelling at less than 2 kilometers an hour and more than 50 miles an hour respectively.

The local weather of a region significantly affects the local climate of the region. This is because weather and climate are closely related. Weather can be defined as the atmospheric changes that are recorded in a period of twenty-four hours, while climate is defined as the weather patterns that are witnessed over a long period.

A ray is an instrument used to model the propagation of light. The rays of light are normally propagated in a path that is considered rectilinear whenever they travel in any medium (Erik, 2004). At the interface of two media that are not similar, a ray would bend, curve if in media that changes its refractive index, reflected or absorbed.

And thus, the glaciers, the ice caps and the ice sheets are melting, the climate is vigorously changing and the sea levels are rinsing. This of course becomes the cause of many of the natural disasters as well, like the tornadoes, floods, sandy storms, etc.

Charles Messier's Butterfly Cluster. Our galaxy contains nearly 400 billion stars including many comets, nebulas and star clusters. Star clusters, or Messier objects, are collections of many stars in our galaxy. In the past astronomers confused them with comets; however, Charles Messier (a French scientist) observed them very carefully throughout his life and discovered 15 comets along with 103 other celestial objects which were later named Messier objects.

The first aspect introduced is the relationship between GDP and interest rates. Changes in the interest rate have no direct impact on the GDP. Consequentially, the GDP remains stationary at its given level (GDP0 in the diagram below) for all levels of the interest rate. Therefore, a vertical line represents the GDP in the graph.