In a controlled experiment, it takes 3700 J to melt the amountof metal that is in a weld bead with a cross-sectional area of 6.0mm2 that is 150.0 mm long. (a) Using Table 28.2, what is the mostlikely metal? (b) If the heat transfer factor is 0.85 and themelting factor is 0.55 for a welding process, how much heat must begenerated at the welding source to accomplish the weld?