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Physics Essay

Electric and megnetic fields
Since the electric power has been of chief significance to living, humans have engaged themselves into conception of possibilities to obtain higher potentials and benefits with electric and magnetic fields given constant exposure to them. Scientists have long understood even during the 19th century that there exists special connection between electrical fields and magnetic fields which may be experienced everywhere on earth. Moving electric charge (electric current) can induce magnetic field.
Pages: 4 (1000 words), Essay
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Earth & Ecology
The Cordilleran ice sheet covered up to two and a half million square kilometers at the Last Glacial Maximum and perhaps more than that in some preceding phases. Today it covers almost the whole of British Columbia and Southern Yukon Territory (Cordilleran Ice sheet, n.Under the force of gravity, moving masses of sand, rocks, soil, loose mud, water and air are transported down steep slopes which are called the debris flows. These substances which can be anything from finely powdered rocks to
Pages: 7 (1750 words), Essay
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Environment 2
The case provided in-depth insights on two important aspects. The first is that the study was able to identify the manner by which entrepreneurs and investors are scrambling to hitch on the clean technology bandwagon, which supposedly started in the year 2007. It cited specific cases such as the investments of Google and Wal-Mart on clean technologies. Secondly, there is the process involved in clean technology entrepreneurship. From research, business development, and management - these were
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Essay about scanning electron microscope
For showing the topography and morphology of the sample with backscattered electrons are used for contrast illustration of multiphase sample composition. X-rays are produced by through inelastic collisions of electrons incident on the sample and the electrons present in the sample atom’s discrete shells. During these electrons return to their lower energies, they give out fixed wavelength X-rays. Each element in the mineral being investigated produces X-rays which are characteristic to it
Pages: 6 (1500 words), Essay
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Earth Science Geology
They are also helpful in discovering climate change and contribute to the ideas of causes of climate change. In addition, geologists study the earth and the way it came into being (Monroe, 2012).Through studying natural hazards, it is possible to develop early warning systems of the disasters that may have been predicted. Climate change being a core issue currently, then geological studies helps the whole world to know some of the causes such as burning of fossil fuels and the use of CFCs.
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Environments and Ecosystems
Mississippi River volume and marshland availability that might have lingering impact on insect volumes or fertilization capabilities of certain indigenous, national plant varieties.Surrounding this blended ecosystem is the human condition, consisting of retail centers, housing developments and scattered suburban lifestyle. In some areas, especially the Gulf and Mississippi River areas, certain species of plants and animals have become dependent on human infrastructure and have thrived as a
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Environmental Issues and the Industrial Revolution
The amount of deforestation that took place killed our jungles and most of the animals’ habitats. Even though, steam engines were a bright idea, it is not eco friendly and it kills our environment.One of the things that were adopted through industrial revolution was the factory system. The factory system helped production in huge masses which meant that several people were served at once. Also it meant that more job opportunities were available for more people. But throughout serving people,
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Equations of Motion
The simple pendulum was set up. The setup was made up of three regions. The centre was the pendulum. The length of the pendulum was chosen for the pendulum by using the slider on the left side of the screen. This value was recorded in the data table. The amplitude was raised to about 20 degrees. This value was equally recorded in the data table. The start animation button was clicked, and when the pendulum passed its lowest point, the timer was started. The time taken for the pendulum to
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Explain some of the things in common between todays hybrid cars (like the Prius) and a futuristic maglev train (with specific attention to electromagnetic propulsion and braking).
Similarly, they perceive that a hybrid car model is unsafe, as the driver has no control of the car. They argue that with the car using two sources of power, the fossil fuel powered engine and the generator/motor power, the driver has little control of the car. Similarly, the fact that the maglev train has no engine and acts on an electromagnetic field around the tracks and the walls makes them relatively prone to accidents or braking failures. Others point out that the fields in some instances
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Earth system
Since the human society has limited time to avoid irrevocable changes in the climate, it is high time for parties to find a better focal point of the discussion. Understanding how devastating these changes are sheds light on the importance of avoiding the global climate change.As greenhouse gas emissions increase, sea levels are rising, average global temperatures are increasing, and severe weather patterns are accelerating. These changes, coupled with other global dynamics, including growing,
Pages: 6 (1500 words), Essay
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Exploring the Earth through time
Of Cretaceous period was characterized by cooling plus a fall in the sea level thus resulting in reduction in the habitats of dinosaurian plus the shallow water marine animals.On the other hand, impact hypothesis happens to get much of press coverage based on its spectacular nature. There is sufficient evidence supporting the scene of an asteroid impact at the fall of Cretaceous. According to many researchers, the asteroid may have been about 10 kilometers in diameter struck the earth at a
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Essay Assignment
Further, the outrage makes global citizenship manifest that people portray when they hear of social or environmental injustices. Global citizens are more willing to behave in a manner that ensures the world is a sustainable and equitable place (Shallcross and Robinson 94). For these reasons, global citizens participate and contribute to their immediate communities as well as international scenes in positive ways.Global citizenship means more that unification of people from all ends of the
Pages: 10 (2500 words), Essay
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Earthquakes in the media
The tool serves two primary roles, one of which is offering a strategy for mitigating disaster. Its key role is however to minimize associated perils with occurrence of earthquake and to facilitate proper response. The scope of EEWS involve development of information on risk of occurrence of earthquakes, assessment of the data, forecasting using the data, and communication of the predictions for coordinated response. These occurs in a sequence and an inefficiency at one stage compromises the
Pages: 4 (1000 words), Essay
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Explain how and why the LIGHT BULB works.
To understand how this phenomenon is implemented in this tool we need to look at the structure of the lightbulb.Lightbulb has a simple structure. It has two metal contacts at the base connecting the ends of an electrical circuit. The metal contacts are connected to two stiff wires that are attached to a thin metal filament. This filament sits in the middle of the bulb supported by a glass mount. This filament and the connecting wires are surrounded by a glass bulb2. The glass bulb has no oxygen
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Environmental Science
This can involve a slight change in their habits or using more energy efficient appliances. For example, change of habits include:Using cold water to wash laundry and hanging them out to dry instead of using the dryer. This habit will ensure that when doing laundry, less electric energy is consumed, and the one utilizes the abundant natural energy of the sun to dry the clothesInstalling energy efficient bulbs, which save more energy and are longer lasting as compared to incandescent light
Pages: 6 (1500 words), Essay
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Electron microscopy
After focusing the beams by the condenser lens, the highly concentrated electron beam then strikes in a different chamber that is sealed by a carefully prepared known as O-rings. The specimen prepared is what the beam of light passes through in order to magnify it. The varying levels of material density also play a vital role in the magnification process since the beam is also made of particles. This is what influences the lightness or the darkness of the final image that is viewed by the
Pages: 5 (1250 words), Essay
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Exploration Missions on Mars
Determine were able to confirm the presence of water on the planet in the form of ice and it allowed for there to develop speculation concerning whether the ice ever thawed. Moreover, the planet was found to have contained flowing water in the past and that this water must have cooled and turned into ice because of the extremely low temperatures on Mars (Christensen, et al. This mission allowed for regular information concerning the surface of Mars, especially its water content, to be passed
Pages: 7 (1750 words), Essay
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Envoromental science
Oil, gas and other petroleum products has been teamed as major fossil fuels. According to Gaughan (1998), fossil fuels have uncertain future. This implies that in the long run the fuels sources are likely t be extinct thus in the near exploration will need to be gone to identify new site to source raw materials required to produce energy. This means frequent research to prevent the commodity from depleting in the market. In the case solar energy, the resource is unlimited and with proper
Pages: 5 (1250 words), Essay
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Electric and Hybrid Cars
In most hybrid cars, the motor is used to start the cars because it provides high energy at low speeds instantly which is not is not easily achieved from using the gasoline source. The type of controller as either direct or alternating current determines the electric pulse rate of current that reaches the motor which in turn rotates the wheels. However, the alternating current controller requires higher voltage than the direct current controller.Hybrid cars are designed to use more than one
Pages: 7 (1750 words), Essay
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