Two long copper rods of diameter D 10 mm are soldered
Chapter , Problem 3.136(choose chapter or problem)
Two long copper rods of diameter D 10 mm are soldered together end to end, with solder having a melting point of 650 C. The rods are in air at 25 C with a convection coefficient of 10 W/m2 K. What is the minimum power input needed to effect the soldering?
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