what should be the length and cross sectional area of a wire for it to have a resistance of 8 ohms from a 5 cm^3 metal that has a resistivity of 9x10^-8 ohm-meter?
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More collisions mean more resistance. Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area. ... In the same manner, the wider the wire, the less resistance that there will be to the flow of electric charge.
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In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. ... Evolution relies on there being genetic variation? in a population which affects the physical characteristics (phenotype) of an organism.
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