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1.The coupling is used to connect the two shafts together. Assuming that the shear stress in the bolts is uniform, determine the number of bolts necessary to make the maximum shear stress in the shaft equal to the shear stress in the bolts. Each bolt has a diameter d.
2.A four-wheel tractor whose operating weight is 47,877 lb is pulled up a road whose slope is +3.5% at a uniform speed. If the average tension in the towing cable is 4,860lb, what is the rolling resistance of the road?
write a paragraph explaining how the relaxation modulus of a plastic material measured in engineering practice. use a sketch.
Calculate the pH of a 1-L solution containing 0.01 M sodium acetate after the addition of 3 mL 0.5 M H2SO4
A 50 mg-50 Pb alloy is cooled slowly from 700 C to room temperature, a) Calculate the mass fractions of the phase present at 700 C
At a certain location along the span, a reinforce concrete beam section with d=14 in. and b=10 in. is subject to a design shear of Vu=50k. Using No.4 stirrups, compute the required stirrup spacing at the given location. assume F'c=3 ksi and Fy=40 ..
An engineering student is driving on a level roadway and sees a construction sign 180 m ahead in the middle of the roadway. The student strikes the sign at 56 kph. If the student was traveling at 90 kph when the sign was first spotted, what was th..
Water flows in a circular pipe of diameter D at a depth y (
The motion of a box on a spiral conveyor is defined by the following position vector: r = 0.5sin(2t) i + 0.5cos(2t) j - 0.2t k where r is in meters and t is in seconds. Find the location, velocity, and acceleration when t = 0.8 s.
Calculate the size of an anaerobic digester required to treat the sludge from a primary clarifier designed to treat 38,000 m3/d of sewage. The quantity of dry volatile solids removed by the plant is 0.15 kg dry solids/m3 sewage.
Water flows through a 200 m long ,30 cm diameter steel pipe with surface roughness 0.046 mm at a rate of 0.25 m^3/s .Find the pressure(P2)considering both friction and minor losses
Differntial Leveling between BM's A,B,C,D, and A gives elevation differences (in meters) of -15.632, 32.458, 38.214, and -55.025, and distances in km of 4.0, 6.0, 5.0, and 3.0 respectively.
The velocity along a pathline is given by V (m/s) = s^2 x t^(1/2) where s is in meters and t is in seconds. The radius of curvature is 0.5 m. Evaluate the acceleration along and normal to the path at s = 2m and t = 0.5 seconds.
a certain pesticide is fatal to fish fingerlings at a level of 0.5 parts per million in water. a leaking metal can
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