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What is the reason for such large variations in resistivity of different materials?
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What is the cgs unit of specific resistance?
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Is resistivity the same for all materials with the same length?
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Bardeen, Cooper, Schrieffer - these three scientists gave the theory to explain about the reason for super conductivity of materials. Hence named as BCS theory. Superconductivity is a phenomenon in which certain substances at very low temperatures such as 3K or 4K their resistivity totally vanishes and become cent percent conductor. So named as super conductor But actually, accidentally found by H. Kamerlingh Onnes. He found mercury lost its resistivity totally at 4.2K.
Is book of Mormon in flemish?
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Why are different materials in different states at room temperature?
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What are the factors that affect resistance and their units?
Resistance is directly-proportional to a material's length and resistivity, and inversely-proportional to its cross-sectional area.In SI, length is measured in metres, cross-sectional area is measured in square metres, and resistivity is measured in ohm metres.In North-American units, for conductors of circular cross-section, length is measured in feet, cross-sectional area is measured in circular mils, and resistivity is measured in ohm circular mils per foot (although, for some strange reason, it is often written as 'ohms per circular mil foot', which doesn't make much sense if you apply unit analysis!).Note that resistivity is affected by temperature, so figures for resistivity are always quoted at specific (usual ambient) temperatures. So temperature indirectly affects resistance.
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Every book needs to have villain or else there isn't much of a plotline or a climax. But there are different kinds of villains. There are people like the Twits in Roald Dahl's book The Twits or there are villains like The Joker in Batman. There are so many different villains and so many different variations.
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Why did people explore rainforest?
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