Technician A says that a system should be evacuated for twice as long if the vacuum pump will only pull it down to 20"Hg. Technician B says that the system might have a leak in it if it will not pull down into a deep vacuum. Which technician is correct
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
B) Technician B only
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What happens to molecular movement as the temperature decreases?
A) Molecular movement increases B) Molecular movement decreases C) Molecular movement does not change D) Molecular movement cannot be measured
Welding pipe in the 1G position will be similar to welding _____ in the 1G position.? ?
A. wire? B. joints? C. steel? D. plate?
Determine the length of the base of a triangle if the height is 15.5 inches and the area is 525 square inches? Round the answer to 3 significant digits.
Fill in the blank(s) with the appropriate word(s).
Natural gas floats on air. What does this tell us about its properties?
A) It has a higher density than air. B) It has a higher specific gravity than air. C) It has a lower volume than air. D) It has a lower specific gravity than air.