A single passenger research submarine is shaped like a hollow sphere, made of a first (innermost) layer of iron with an internal radius of 1.50 m and 2.00 cm thick and lined with a rubber layer of the same thickness. If the submarine is navigating Arctic waters where the temperature is 0° C and the rate of heat released per unit time inside the small ship is 1500 W The thermal conductivity of iron is 79.5 W / (m °C) and that of rubber is 0.20 W/ (m °C). b) Why can the heat current in the iron layer and in the rubber layer, are considered the same?

A single passenger research submarine is shaped like a hollow sphere, made of a first (innermost) layer of iron with an internal radius of 1.50 m and 2.00 cm thick and lined with a rubber layer of the same thickness. If the submarine is navigating Arctic waters where the temperature is 0° C and the rate of heat released per unit time inside the small ship is 1500 W The thermal conductivity of iron is 79.5 W / (m °C) and that of rubber is 0.20 W/ (m °C). b) Why can the heat current in the iron layer and in the rubber layer, are considered the same?