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An excursion train, travelling at 80ft/s, encounters a rain shower. The point A lies directly 8ft. beneath the lip of an overhang in the observation car. The raindrops can be assumed to be falling at a constant speed of 40ft/s. Under the current conditions, a raindrop just clearing the lip would strike the observation car's floor 16ft from the point A. At what constant rate would the train need to be decelerating ( deceleration starting just as the drop passes the lip) for the drop to hit the floor 8ft. from A? What angle does the raindrop's velocity vector make with respect to the floor at the time of impact, as seen by an observer on the train?
the engine develops a maximum torque of 210ft-lb at 3600 rev/min. what is the maximum grade this vehicle could ascend, on a paved surface, while the engine is developing maximum torque (assume that the available tractive effort is the engine-gener..
sitting on the deck one evening. watching for that pesky bunny, jon and his brother see a twig floating down from an aspen tree. (wait - os that a bunny) they wonder just what the boundary layer looks like on the twig.
If the shaft AB is rotating with a constant angular velocity of w = 30 rad/s, determine the X, Y, Z components of reaction at the thrust bearing A and journal bearing B at the instant. The disk has a weight of 15 lb.
A Fe-.25 w/o Carbon alloy is sloly cooled to 700 degrees C. What is the composition of the Ferrite(alfa) phase and what is the compositon of the cementite(Fe3C) phase. Whate are the relative fractions of ferrite and cementite
Long Line: the slope distance and zenith angle measured from point a to point b were 17,685.20 ftand 93degrees 13' 46" . The instrument and reflector heights were equal. If the elevation of the point A is 1854.43 ft above the MSL Datum
The transportation agency would like to determine the maximum spacing of stations to allow trains to arrive no more than 5 minutes apart. 1. Draw a time-space diagram depicting the above scenario
you are designing a highway to AASHTO guidelines on rolling terrain where the design speed will be 65 mi/hr. At one section, a +1.25% grade and a -2.25% grade must be connected with and equal tangent vertical curve.
The reaction between 2-methyl-2-pentanol and HBr to yield 2-methyl-2-pentene is probably: A) an E1-type reaction involving the protonated alcohol as the substrate. B) an SN2-type reaction involving the protonated alcohol as the substrate.
Testing has already been completed on the water and the Usage Rate for the carbon is 0.4 pounds of carbon per 1000 gallons of water treated. The required EBCT is 20 minutes and the carbon longevity must be at least 6 months.
The volume of fill required is 2500 cubic meters. Find the volume of soil that must be excavated from the borrow pit to furnish the required volume of fill. (in cubic meters).
A magnetic separator processes 500 kg/hr of finely ground magnetite ore (Fe3O4). The ore containes 35% magnetite and an analysis of the concentrate and tailings shows that they contain 59.5% Fe and 3.8% Fe
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
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