Question

The city of Detroit needs to install a metal culvert (hollow cylinder) at the intersection near my house that is 112 ft long and 3.00 ft in diameter. The entire surface of the culvert must be galvanized with a 0.250-mm layer of zinc (D = 7.15 g/cm³) to prevent corrosion through electrolysis with Zn²⁺ ions. If the voltage is 2.50 V, how much does it cost (in dollars) if electrolysis is only 85% efficient? Note: The cost of electricity is 15 cents per kilowatt hour

Answer 1