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Two identical rollers,each of weight 90N are supported by an inclined plane and a vertical wall as shown in fig., determine the reaction at the points of supports A,B,C assuming all the surfaces to be smooth. Also find the reaction forces between the spheres
A civil engineering student contends that 60 mph is safe in a van because of the higher driver's eye height. If all other design inputs are standard, what must the driver's eye height in the van be for the student's claim to be valid
The 50-lb block C rests on the uniform 20-lb bar AB. The cable connecting C to B passes over a pulley at D. Find the magnitude of the force acting between the block and the bar
It was not possible to occupy D, but it could be observed from C and E. Calculate the angle CDE and the lengths CD and DE, taking DE as the datum, and assuming all the observations to be correct
The bottom bar is made up of an aluminum bar and a steel bar, each 10 in. long placed in the parallel configuration at 70 F. That is also heated to 300 F.
A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.0500 moles of solid NaOH. Assume no volume change upon the addition of base. The Ka for HF is 3.5 x 10 -4 .
A 12-in well is drilled through a confined aquifer of average thickness 80 ft. Two observation wells located 50 and 120 ft away register a difference in drawdown of 10 ft. The steady-state pumping rate is 1000 gpm
Assume that 200 g is the equivalent mass of the stick concentrated in the blade which contacts the puck. The coefficient of restitution of between puck and blade is 0.6. Find the velocity of the blade of the stick
The slope distance and zenith angle measured from point P to pointQ were 1876.253m and 87.33'24 degrees, respectively. The instrumentand rod target heights were equal. If the elevation of point P is227.965m, above datum, what is the elevation of poin..
A section of highway is 18 km long. A bus going fromeast to west on this road climbs for 6 minutes at one speed, levelsoff for 6 minutes at a second speed and descends for 6 minutes at athird speed. Going from west to east on the same section ofthe r..
The maximum and minimum dry unit weights of a sand were determined in the laboratory to be 104 lb/ft^3 and 93 lb/ft^3, respectively. what would be the relative compaction in the field if the relative density is 78%
Recommend the undrained shear strength for use in the design of (1) a foundation for an oil tank, and (2) a slope.
A nation has a high Human Development Index and a high gross domestic product. Which of the following factors might result in classification of the nation as developing rather than developed?
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