At which speed does the movement of air become noticeable?
A. 25 ft/min
B. 50 ft/min
C. 75 ft/min
D. 100 ft/min
E. 150 ft/min
AnswerB. Any air movement above 50 ft per minute is noticeable.
ARE 4.0 exam prep: PPP
A. 25 ft/min
B. 50 ft/min
C. 75 ft/min
D. 100 ft/min
E. 150 ft/min
AnswerB. Any air movement above 50 ft per minute is noticeable.
ARE 4.0 exam prep: PPP
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