Solved: The rear window defogger of a car consists of

Chapter 20, Problem 20.124

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The rear window defogger of a car consists of thirteen thin wires (resistivity 88.0 108 m) embedded in the glass. The wires are connected in parallel to the 12.0-V battery, and each has a length of 1.30 m. The defogger can melt 2.10 102 kg of ice at 0 C into water at 0 C in two minutes. Assume that all the power delivered to the wires is used immediately to melt the ice. Find the cross-sectional area of each wire. S

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