Potential difference applied across a wire
A potential difference of 30.0 V is applied across a wire of cross-sectional area 5.01 mm^2 and length 929 km. The current passing through the wire is 2.311×10^-3 A.
a) What is the resistance of the wire?
b) What type of wire is this?
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Carbon dioxide goes from a solid to a gas at -78 degreesCelsius. The molar heat of sublimation is 25.2 kJ/mol. In one experiment, 20.5 g of dry ice is placed in an insulated,isolated container with 500g of water at 25 degrees Celsius.
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A textile manufacturing process finds that on average, 5 flaws occur per every 190 yards of material produced.
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