Which formula is used to calculate the pulse width on a monostable 555 timer?
A) tw = RAC B) tw = RAC(1.1 ) C) tw = RAC(.693 ) D) tw = RARB(1.1)
B
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Hydroplaning can occur at speeds as low as ________
A) 30 mph B) 45 mph C) 55 mph D) 40 mph
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Foundations are susceptible to moisture wicking into the building through capillary action from footings and foundation walls or through slabs. This can be controlled through the installation of a capillary break between the top of the footing and the foundation wall or piers, and a ____ barrier below the concrete slab floor or over the dirt floor of the crawl space.
A. vapor B. moisture C. silicon D. wooden
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Supervisors should remember several rules when writing accident reports