The figure below shows a 6 A current flowing in a portion of a circular loop. Find H at point (0, 0, 5) if ρ1 = 2, ρ2 = 4 and Φo = 45o . • Show all the necessary steps in details and make your solution clear and tidy.

The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.