A submerged arc-welding operation under automatic control is used to butt weld two round steel tubes with diameters = 2.0 m. The tubes are slowly rotated under a stationary welding head to complete the weld seam. Welding voltage = 25 volts, and current = X1 amps. The heat transfer factor for SAW = 0.95, and the melting factor = 0.8. Cross-sectional area of the weld bead = 50.0 mm2 . If the melting temperature of the steel = 1490°C, and its unit melting energy = 10.3 J/mm3, determine the (a) rotational speed of the tubes and (b) time required to weld the seam

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i lost in getting someone back.

i learned that people are really two-faced and no matter how angelic someone appears they always have a devil side and that you cant trust anyone anymore no matter how dear they are to you.

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~batmans wife dun dun

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explanation:

assault rifle is a rapid-fire, magazine-fed rifle designed for military use. it is a shoulder-fired weapon that allows the shooter to select between semi-automatic (requiring you pull the trigger for each shot), fully automatic (hold the trigger and the gun continuously fires) or three-shot-burst modes.

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jomamais ay

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