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A motorist traveling at 55 mph down a grade of 5% on a highway observes an accident involving an overturned truck ahead of him which completely blocked the road. If the motorist was able to stop his vehicle 30 ft away from the overturned truck, what distance away from the truck was he when he first observed the accident?
Assume perception/reaction time of 2.5 seconds
For this particular problem we can ignore the friction value and just use a standard deceleration rate of 11.2 ft/sec.
on five-cycle semilogarithmic paper plot the grain size distribution curves from the following mechanical analysis data
A plate is pulled upward from a pool of liquid with velocity, V, entering a thin liquid film on the surface of the plate. The flow is assumed to be laminar and the film thickness
If the toluene concentration in the water supply is 1,000 ppb, the treatment objective is 5 ppb, and the flow of water is 378 L/min (100 gpm), what mass of PAC must be placed in a contact basin on a daily basis to satisfy the treatment objective
Suppose the utility encourages its customers to replace their 75-W incandescents with 18-W compact fluorescent lamps (CFL) that produce the same amount of light. Over the 10,000-hr lifetime of a single CFL,
Suzanne is a recent chemical engineering graduate who has been offered a 5-year contract at a remote location. She has been offered two choices. The first is a fixed salary of $75,000 per year.
The terrain in the in the immediate area does not allow for level measuring area. if the suveyour verifiies the diffence in elevation between the point measured from. and the point measured to, as 8.93 feet,
Consider the air over a city to be a box 100 km on a side that reaches up to an altitude of 1.0 km. Clean air is blowing into the box along one of its sides with a speed of 4 m/s.
Find the concrete cross-section and steel area required for a simply supported rectangular beam with a span of 20 ft that is to carry a computed dead load of 1.3 k/ft and a service live load of 2.25 k/ft.
A one tenth scale model of a soap box derby car is tested in a wind tunnel. The air speed in the wind tunnel is 70m/s, the air drag on the model car is 240 N, and the air temperature and pressure are identical to those expected
A compaction test was conducted in a soils laboratory, and the standard proctor compaction procedure (ASTM D698) was used. The weight of a compacted soil specimen plus mold was determined to be 3815 g.
A freeway on a level terrain carries a volume of 4500 veh/hr onfour 11-foot lanes in one direction. the vehicle mix is 75%passenger cars, 10% trucks, 10% buses and 5% recreational vehicles.lateral obstructions are located at a distance of 5 ft on the..
A fellow I know wanted to know the coefficient of friction between steel and commercial carpet. The value was not in the tables of any textbook he had, so he devised an experiment.
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