Result for Category Physics : 535 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 6
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.

FOSSIL FUEL REPLACEMENT

3 pages (753 words), Download 2
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.

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.

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.

Paleo-discharge of the Maumee floods

10 pages (2510 words), Download 1
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.

Alternative Fuels for Automobiles

3 pages (753 words), Download 1
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”.

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.

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

4 pages (1004 words), Download 1
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 1
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 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.

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).

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.

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.

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).

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.

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.

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.

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.

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 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.

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).

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.
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