Result for Category Physics : 894 papers

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Many students require some free physics help as this science is a complex one. Not many people have a call to this subject. That is why the majority of students cannot gain high GPA. Physics  explains the world around us. Studentshare team offers physics help for free in the shape of numerous essays, research papers, case studies, and more. By downloading our study materials you receive a free physics homework help. Get ready for any assignments you may face with excellent physics articles, essays, case studies, and research papers shared by the cleverest English-speaking students. Physics homework solutions are all here in one place.

Greenhouse Effect and Global Warming

3 pages (753 words), Download 9
Our atmosphere makes life on earth possible. It is a complex natural system that provides a multitude of benefits (Critchfield, 1983). One of these benefits is referred to as The Greenhouse Effect. As solar radiation enters the atmosphere much of it is immediately reradiated out into space by cloud cover.

A history of ultrasound physics and the properties of the transducer

5 pages (1255 words), Download 3
Transducers act as both a transmitter and a receiver of ultrasound and are capable of producing beams that are in turn directed in a variety of ways of improving the quality of the images that are seen on the screen. The main component of the transducer is made from a special piezoelectric material, which implies that they are capable of converting one form of energy to another; for instance, electrical energy can be converted to mechanical energy and vice-versa.

FOSSIL FUEL REPLACEMENT

3 pages (753 words), Download 2
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They are mainly used for industrial and for domestic purposes. These sources of energy are, however, non-renewable and are limited in supply; this is because they take too long to form. Furthermore, once their deposits are depleted they cannot replenish. According to the U.S.

Decarbonizing Electricity

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In turn, these turbines generate electricity which can be commercially viable depending on the velocity of the winds. Harnessing of this wind power sometimes is a challenge because winds are not constantly flowing and therefore at such times there is bound to be overloads and power surges.

Global Warming: Causes, Effects and the Future

10 pages (2510 words), Download 2
Many environmental activists have provided how the global warming is going to affect the environment, as they have all come to the same conclusion about the fact that the global warming is really going to affect the earthly environment, where the extent of its harmfulness will keep increasing with due respect of time.

Paleo-discharge of the Maumee floods

10 pages (2510 words), Download 2
The focus for this investigation is around five locations presented as cross sectional areas. The site descriptions for the areas provide physical views and logical dimensions as viewed on maps and on the ground. The calculations of the measurements provided are a representation for the estimates that is used in solving the problem.

The Solar System and Moon Landing

2 pages (502 words), Download 2
Historical events and scientific discoveries are capable of changing people’s understanding of the natural world and scientific concepts. Scientific discoveries are based on studies, observation and experimentation, which dispels the early beliefs resulting into a new understanding (Bond, 2012).

Rocket Science

5 pages (1255 words), Download 2
For over four decades, NASA has undertaken a number of successful human space flight programs. The role of NASA and ways it could implement to achieve its goals was redefined by President Barak Obama. Some of the current NASA plans for the manned space flight program include Tier One, this aircraft is the newest project, and the in-house name of this program was known as Tier One.

Current flow in a circuit (purely resistive and restive-capacitive

4 pages (1004 words), Download 2
The current may cause effects such as heating or even induce magnetic fields preferably used for generators, motors and inductors. Current generally flows from the positive terminal towards the negative terminal of battery and there is voltage drop across the electrical elements in the circuit due to resistance, reactance or inductance.

Final Exams

4 pages (1004 words), Download 2
STUDENT NAME DATE COMPLETED/SUBMITTED [To Student: All your answers should be entered on this Answer Sheet. Submit this Answer Sheet to your Assignment Folder when completed.] Multiple Choice Section (Answer 26 Questions) Type in the letter that represents your best answer to the corresponding question from the original final exam document.

Investigating the physics of basketball

5 pages (1255 words), Download 2
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.

Space Exploration

6 pages (1506 words), Download 1
COVER STORY During the heat of the space race in the 1960s, NASA decided it needed a ballpoint pen to write in the zero gravity confines of its space capsules. After considerable research and development, the Astronaut Pen was developed at a cost of approximately $1 million US dollars.

Alternative Fuels for Automobiles

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We have been utilizing petrol and diesel over a span of century and now the time has come that we switch on to another alternative fuels in an effort to save the living standard of the people of the 21st century. According to (Wald)“One of the nation’s biggest energy problems is that nearly all of its ground transportation fuel is derived from oil”.

Formation of Solar Systems

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This paragraph will explain about the formation of planets. Sun has already formed but remaining gas and dust is still there in the form of disk. Sun will start heating the dust and gas cluster. The source of heat is at center and disk will be hottest nearer to the center.

Global Warming: Truth or Hype?

3 pages (753 words), Download 1
Increased global warming is dangerous for the existence of life on earth. This is because the earth’s surface is heated in more direct way causing detrimental effects on the biota. The last century witnessed the growth on the level of global temperatures i.e.

comparative essay on old earth and young earth

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Firstly, a rational man is known to believe that the universe had a beginning. Secondly, galaxies appear to be moving away from us at a speed which is proportional to their distance. This observation goes hand in hand with the expansion of the universe and suggests that the universe was once compacted (Delsemme, 1998).

Explain and Evaluate Psychodynamic and Humanistic Approaches

4 pages (1004 words), Download 1
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.

RC circuit lab report

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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.

The Hubble Telescope

6 pages (1506 words), Download 0
Time and again man invented various instruments that assisted in the finding out of what resided in the skies that were apparently unseen to man. Among these instruments one of the most revealing instrument proved to be the invention of the telescope. Its subsequent placement into the atmosphere beyond the Earth’s visible skies opened new horizons of information regarding the universe.

Gas turbine engine basics

8 pages (2008 words), Download 0
Turbojets with converging-diverging nozzle (Sherwin, Keith & Michael, Horsley, 1996) There is an upstream rotating compressor that is coupled to a downstream turbine, and a combustion chamber in-between, and the accelerated gases moving through the engine nozzle is used to provide thrust, which drives the aircraft.

Heat and temperature

4 pages (1004 words), Download 0
(Liboff, 1990) The addition of energy especially heat energy triggers particles to move faster while the removal of heat energy slows the particles down. Hence, if the state of heat energy of a system is known then the speed of its particles can be ascertained to a reasonable extent.

Black Hole. Characteristics and nature.

5 pages (1255 words), Download 0
Black Hole. Black holes are very condensed space objects that were formerly the huge stars, which crumpled inward as a result of the power of their own gravity. Consequently, black holes are extremely thick. A black hole is a section of space-time from which “nothing, not even light, can escape” (Susskind & Lindesay, p.

The international space station. Major Components.

10 pages (2510 words), Download 0
The US launched its first satellite Explorer I in 1958, soon after the Soviet Sputnik in 1957. This was the start of space race. The race is in the Cold War era when both nations strived for supremacy in every field. The period was a set of high tension incidents without direct military action.

Investigation and previous work on optical and thermal measurements in transparent materials

16 pages (4016 words), Download 0
Therefore, this chapter details previous studies on the optical and thermal analysis of optical materials. The basics of ray tracing, optical features and thermal analysis are described first, followed by a discussion on previous investigations on optical, thermal and physical properties of glasses and polymeric materials such as polymethyl methacrylate (PMMA).

Positron Annihilation.

10 pages (2510 words), Download 0
When a low energy positron collides with a low energy electron, there is an emittance of two gamma rays in the opposite direction. This phenomenon, also called positron annihilation, results in two gamma rays at 180° and with 0.511 MeV of energy moving in opposite directions.

Echo Planar Imaging, or EPI, Fast Imaging Techniques (MRI)

10 pages (2510 words), Download 0
Introduction Magnetic susceptibility refers to the process y issue tissue affects magnetic field. The existing boundaries between fat and compact bone are normally affected by the transverse magnetic field de-phasing and signal distortion. The consequent of the above is that frequency positions in the wrong location in the phase direction.

solar panels in Burkina Faso

4 pages (1004 words), Download 0
The paper briefs about the initial problems after the 2009 floods and explains the reasons behind this installation. Furthermore, the paper contains a detailed but simplified explanation of the working of solar cells including the structure of solar cells, the P-N junction and the mobile electron-hole pairs, along with the number of cells which will be needed for the required purpose.

SCANNING ELECTRON MICROSCOPY

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The SE image appears more three dimensional than the BSE image. The cluster of fibers at the center in the SE image appears more rounded, while the one in the BSE appears flat. The contours and topography of the SE image are clearly visible, while the BSE image looks flatter and plane.

Year 2012: Fact or Fiction?

14 pages (3514 words), Download 0
The Mayan prophecy states that many devastating events will occur in December 2012 at a certain time that will lead to the destruction of the earth. On one hand, the astronomical knowledge of this ancient meso-american civilization is known to be far ahead of their times.

Oceans and Climate Change

3 pages (753 words), Download 0
The first of these and one which is really worth mentioning is the Gulf Stream. The Gulf Stream is responsible for the “relatively mild climates of northeastern North America and Europe” (Murck et al., 2010). The Gulf Stream is a warm water current that begins in the Gulf of Mexico and goes out into the Atlantic through the Florida strait.

Erosion, weathering, mass wasting. Earth's Interior Geologic Time Scale

4 pages (1004 words), Download 0
Erosion occurs when wind or water blow/wash away the topmost fertile layer of soil. As fertile land loses its fertility due to soil erosion, it is difficult to grow crops on eroded lands. Apart from affecting crops, erosion also weakens land, causing buildings to collapse.

The Vast Solar System.

4 pages (1004 words), Download 0
One of the most amazing part of creation would be the solar system. Today, the solar system is still a mystery to some people while those that understand what it really is are awed by its vastness. First of all, the solar system is made up of the star which we call the Sun; many planets namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto; and numerous comets, asteroids, and meteoroids.

Energy and socity

3 pages (753 words), Download 0
This lies in the number and atoms’ type, which constitute their individual molecules. For instance, diatomic molecules like N2 & O2 have similar atoms contradictory H2O, CH4, and CO2 whose atoms plus bonds differ radically. This influences their rate of IR absorption.

Signal Space Cooperative Communication

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Here the original constellation is expanded so that it can accommodate all possible combinations of different components of signal points in the original constellation. In order to cooperate effectively in the relay phase, it is necessary for the relay to extract all the information required.

Sculpturing the Earth's Surface. The Florida Everglades.

4 pages (1004 words), Download 0
“The universe is reflected in the sides of a grain of sand” stated William Blake and this stands absolutely true for the region defining the South Florida Everglades (as cited in Dugger, n.d). It is a living example of how much destruction a hundred years of forced oppression can impose upon a region.

Echo Planar Imaging, or EPI, Fast Imaging Techniques (MRI)

15 pages (3765 words), Download 0
EPI is a fast, flexible imaging method, with good contrast and resolution, and with many potential applications in clinical imaging, such as functional MRI and rapid entire brain imaging. Though, EPI can be very unforgiving and requires careful parameter selection (Weishaupt, Koechli and Marincek, 2008).

Range of semiconductor devices and circuits

12 pages (3012 words), Download 0
If the positive side of the ohmmeter is connected to the P-material and the negative side to the N-material the diode will be forward biased and due to this the voltmeter will at an appropriate scale will indicate some resistance. When the two ohmmeter leads are reversed the diode will be reverse biased and this indicates whether a diode is good or bad.

Electron Microscopy

20 pages (5020 words), Download 0
Images in TEM are obtained by focusing an electron beam on the specimen. The electrons are absorbed, transmitted, scattered or backscattered. Depending on the kind of image required by the operator, either the transmitted electrons (called direct beam) or the scattered electrons (called diffracted beam) is selected.

did asteroids kill the dinosaurs?

5 pages (1255 words), Download 0
The extinction event that is most familiar today is the one which killed off the dinosaurs, and allowed mammals to take their current place as the dominant species type (York 2006). One of the most well-known theories for the cause of this extinction event is an asteroid hit, but there are several others, including global climate change, volcanic eruptions, communicable disease, and sex determination.

Cause and effects of Ozone Depletion

4 pages (1004 words), Download 0
In other words, ozone is more important than oxygen as far as the sustainment of life forms on earth is concerned. The Ozone layer at the top of the atmosphere prevents harmful ultraviolet radiations produced by sun and other stars from reaching earth. However, manmade activities are causing huge problems to the ozone layer at the top of the atmosphere and the depletion of this layer is currently taking place.

Dr. Stephen Hawking

8 pages (2008 words), Download 0
Furthermore, this paper will chronicle the subsequent career and profession that he has as a theoretical physicist, which in turn, made him into an academic and scholastic celebrity. During his career of many years, he has accomplished numerous achievements and this paper will name and exemplify these attainments and successful discoveries.

Determining the density of an irregular solid.

4 pages (1004 words), Download 0
Challenge to the determination of the density of an irregular solid is poised to its non-conformity to the any three-dimensional object that are used in the functional determination of the volume of natural and synthetic three dimensional objects. An irregular object falls outside the circular, ellipse, triangular, square, and rectangular or sphere basic units used in the mathematical computation of object.

The Theory of Continental Drift

5 pages (1255 words), Download 0
He said that the continents seemed to fit together at the edge of their continental shelves. He based his argument from the observation that the rocks and fossils at the southern hemisphere exhibited a similar pattern. This pattern referred to as the "Gondwana sequence".

Effectiveness of Cloud Seeding

8 pages (2008 words), Download 0
In order to attain this, substances are dispersed from ground generators or planes into the air to act as ice nuclei or cloud condensers. Their function is to change the microphysical process within the mass of cloud. This technology is gaining a widespread application globally and its practical uses are fog removal, lighting suppression, causing precipitation in form of rainfall, preventing hailstorms and hurricane control.

THE GEARED SYSTEM AND THE GEAR BOX.

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Experiment 2: TITLE: THE GEARED SYSTEM AND THE GEAR BOX. Introduction. This experimental set up is a rubric of a functional gear as applied in Physics and in other disciplines. It gives a reflection of how the gear system operates, how sizes and numbers of teeth in any given gear system relate, as well as, how the naming of the gear system is achieved.

Physics of racing

3 pages (753 words), Download 0
The research paper commences on the comprehension of components that work up several and easy equations that can be used to determine weight transfer in any car. The weight transfer will also be determined using information only obtained from the wheelbase, CH height, distribution of the static weight of the car and driver, and the design of the racetrack, or simple space amid the wheels across the car (Beckman, 2002, p.

The Black Holes

5 pages (1255 words), Download 0
It is not possible to directly see a black hole since light does not escape from it. However, as demonstrated in this paper, there is adequate if not sufficient scientific evidence to believe in the existence of black holes. Black holes are mostly formed when a massive star burn up their fuel and explodes into a supernova (Hengel 50).

The Impact of Fruit Juices on the Dental Erosion in Human Tooth Enamel

10 pages (2510 words), Download 0
The changing lifestyle pattern of human beings which incorporates consumption of acidic substances like soft drinks and fruit juices has been a major contributor for the development and progression of dental erosion. Immense research in this field has strongly indicated a definite connection between the role of fruit juices and soft drinks and the development of dental erosion.

Magnetisation Behaviour of Transition Metals and Ferrites

35 pages (8785 words), Download 0
Within this dissertation, an examinatio of ferro-, ferri-, and paramagnetic fields and how they all behave distinctly and how the level of magnetism of an object can be measured using a superconducting quantum interfering device (SQUID), the Magnetic Optical Kerr Effect (MOKE), or a Vibrating Sample Magnetometer (VSM) will be examined.

Recent application of classical mechanics

3 pages (753 words), Download 0
For example, in sports, machines, designing mechanical systems, simple machines and parts of machines find lots of applications in classical mechanics. Additionally, in complex situations like launching satellites and rockets, application of classical mechanics plays a large role.
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