A thin-wall stainless-steel tube is to be used as an electric heating element that will deliver a convection coefficient of 5000 W/m2 · ºC to water at 100ºC. Devise several configurations to accomplish a total heat transfer of 10 kW. Specify the length, outside diameter, wall thickness, maximum tube temperature, and necessary voltage that must be imposed on the tube. Take the resistivity of stainless steel as 70 μΩ ∙ cm.