Result for Category Physics: 391 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 5
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.


3 pages (753 words), Download 1
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

3 pages (753 words), Download 1
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 1
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.

The Solar System and Moon Landing

2 pages (502 words), Download 1
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).

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

3 pages (753 words), Download 1
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).

Rocket Science

5 pages (1255 words), Download 1
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.

physics lab report

3 pages (753 words), Download 1
Presence of moving electrons in electrical circuit result to the flow of current in the circuit. 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.

Investigating the physics of basketball

5 pages (1255 words), Download 1
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 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.

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.

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.

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.

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.

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.

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.

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).

A history of ultrasound physics and the properties of the transducer

5 pages (1255 words), Download 0
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.

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.

Space Exploration

6 pages (1506 words), Download 0
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.

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.

Temperature dependent magnetisation of transition metals alloys and ferrites

32 pages (8032 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.

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.
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