67. You're estimating costs for a new power line with your compa- ny's financial group. Engineering specifies a resistance of 50 m2 per kilometer for the line. The costs and densities of copper and aluminum are, respectively, $6.86/kg and 8.9 g/cm³, and $2.23/kg and 2.7 g/cm³. Determine the cost per meter of each type of wire. Which is more economical?

67. You're estimating costs for a new power line with your compa- ny's financial group. Engineering specifies a resistance of 50 m2 per kilometer for the line. The costs and densities of copper and aluminum are, respectively, $6.86/kg and 8.9 g/cm³, and $2.23/kg and 2.7 g/cm³. Determine the cost per meter of each type of wire. Which is more economical?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 64PE: Integrated Concepts (a) Assuming 95.0% efficiency for the conversion of electrical power by the...

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