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What are some welding challenges that can be encountered when welding magnesium?

Why were chromium-molybdenum steels developed? (applications due to its properties)  

How does the level of carbon in steel affect its properties? (be specific)

Long-term customer relationships ________ the cost of information collection and make it easier to ________ credit risks.

According to the segmented markets theory of the term structure

If an individual moves money from currency to a demand deposit account

A particle moves with a constant speed of 4 m/s around a circle of radius 0.25 m. How long does it take the particle to travel once around its circular path?

  List one metal other than aluminum that AC-GTAW is commonly used on.

A shell is fired with a horizontal velocity of 332.5 m/s in the positive x direction from the top of a high cliff. The shell strikes the ground 1330 m from the base of the cliff. What is the height of the cliff? The drawing is not to scale.

Why is AC preferred when GTAW welding aluminum?