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Predict/Calculate Two metal rods of equal length—one aluminum, the other stainless steel—are connected in parallel with a temperature of 20.0 °C at one end and 118 °C at the other end. Both rods have a circular cross section with a diameter of 3.50 cm. (a) Determine the length the rods must have if the combined rate of heat flow through them is to be 27.5 J per second. (b) If the length of the rods is doubled, by what factor does the rate of heat flow change?
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