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The total stopping distance for a car traveling at 50 mph is 461 feet, including the distance traveled during a 2.5 second perception-reaction time. What is the perception-reaction distance? What is the braking distance of this same car?
Given that us=0.24 for all surfaces, find the force P needed to start the block A to the right.
a trapezoidal canal 6m wide at the bottom and having a side slope of 1v2h carries water with a mean velocity of 1.0ms
A composite beam is made by attaching the timber and steel portions shown with bolts of 14-mm diameter spaced logitudinally every 200 mm. The modulous of elasticity is 10 GPa for the wood and 180 GPa for the steel
A two-bed carbon adsorption system is to be designed to handle 8000 acfm of air containing 700 ppm of hexane. Laboratory studies indicate that carbon can adsorb 8lb hexane per 100 lb carbon under the conditions
Given simply supported beam with an overhang. The beam is 12 inches wide by 24 inches deep, and the slab is 6 inches deep. use a roof live load of 20 psf, and a concrete density of 150 pdf
You are asked to design a winch system for Santa's sleigh. Assume that Santa weighs 300 lbs, visits 10 houses an hour and requires a 20 foot lift at each house, what is the average power that the system will use if it is perfectly efficient? Express ..
if the discharge from a 90 degree V-notch weir fills a 20 L vessel in 54 seconds and produces a stage of 30mm upstream of the weir crest, what would the weir coefficient be
An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member to an eye-ring stake anchored in t..
Simply Supported Reinforced Concrete Beams - Explain the purpose and amount of reinforcing in concrete beams in relation to bending and shear and the concepts of under reinforcement, balanced reinforcement and over reinforcement.
The cantilevered wild- flange steel beam is subjected to the concentrated force P at its end. Determine the largest magnitude of this force so that the bending stress developed at A does not exceed 180 MPa.
Find e1, e2, e3 and deflections at those points
Offer an explanation as to why covalently bonded materials are generally less dense than ionically or metallically bonded ones.
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