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Physics Essay

What is a black hole What is the evidence that black holes actually exist, and where in the Universe do we find evidence of their existence
There is rising consent that extremely enormous black holes are real and present at the cores of the majority of galaxies. Specially, there is strong proof of a black hole of above 4 million solar masses at the core of the ‘Milky Way’. A black hole has a dominant gravitational field that catches all that goes in its vicinity. Scientists now think that a number of galaxies have enormous black holes at their cores. These black holes discharge massive quantities of energy that controls the
Pages: 7 (1750 words), Essay
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Heat and Temperature
With this, it is important to note that when one is exposed outside the cold winter, there is a need to wear a coat to slow down the flow of the heat from the body.Temperature is the state of coldness and hotness of an object measured with a device called thermometer. The expansion and contraction of the mercury within the thermometer is compared in a scale to measure how much thermal energy is present in certain molecules of an object. Usually, it is expressed in Celsius or Fahrenheit
Pages: 4 (1000 words), Essay
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Discuss the methods and technology used in damping buildings when resonance leads to SHM caused by the wind and earthquakes
Damping in tall buildings is mainly caused by intrinsic and supplementary sources. Intrinsic damping comes from connections, cladding, friction and seismic motion; in this case, this paper is interested in the seismic causes of the damping which is earthquakes. Supplementary damping is due to engineered devices such as friction devices, viscous and slosh dampers and tuned mass dampers (Katsuhiko, 2005). There are broad methods that have been largely used to control damping;When a building has
Pages: 4 (1000 words), Essay
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Physics of cheerleading
Hot vapor from the compressor undergoes isothermal and isobaric condensation, releasing latent heat of vaporization. The condenser tubes are designed and arranged to maximize their surface area to absorb heat from anything stored in the refrigerator.The compressed vapor temperature is higher than room temperature as the vapor goes into the condenser coils, thus heat will flow out of the refrigerant and be taken away by the surrounding air. However, the vapor pressure remains constant as it gets
Pages: 5 (1250 words), Essay
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Research Papre
This natural process occurs in order to give the earth a temperature which is of a stable state and not to allow rapid heating or cooling in the earth’s atmosphere.Generally speaking, only one percent of the earth’s atmosphere is comprised of greenhouse gases .But this greenhouse gas has a feature of trapping heat in the atmosphere and creating a warm blanket of air around the planet. This is what is known as “green house effect”. Without this greenhouse effect, the earth would have
Pages: 8 (2000 words), Essay
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Understanding graphene's thermal properties: A phonon prospective
Apparently, thermal properties issues have been encountered both in the photonic and optoelectronic devices [4].Fundamentally, materials ability to conduct heat is based on the arrangement of atomic structure. The restructuring of atomic structure will alter the thermal properties of a material on a nanometer scale [15]. Primarily, nanowires and bulk crystals don’t allow transfer of charges or heat due to high components of photons, dispersion or scattering of photon. Studies shows that the K
Pages: 9 (2250 words), Essay
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