Arc cutting electrodes differ from standard arc welding electrodes in that they burn back inside the outer flux covering, creating a small cavity.
Answer the following statement true (T) or false (F)
True
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Nitrogen has a specific volume of 0.25 m3/kg. Using both the ideal gas law and van der Waals equation, tabulate the temperature of the nitrogen for pressures varying between 250 kPa and 2500 kPa, and plot the difference between the two values as a function of pressure.
Given: v = 0.25 m3/kg, N2 What will be an ideal response?
Which of the following flashings in a steep roof has the shape of a small, steep roof?
A) Step flashing B) Apron flashing C) Cricket flashing D) All of the above E) Only A and C
All adult amphibians eat _____
a. algae and water plants b. an omnivorous diet c. only live food d. carrion
If an angle is not acute, straight, or obtuse, it must be a(n) _____
A) metric angle B) opposite angle C) right angle D) adjacent angle