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Three solid shafts, each of 3/4 in. diameter, are connected by the gears shown. Knowing that G=11.2*10^6 psi, determine (a) the angle through which end A of shaft AB rotates, (b) the angle through which end E of shaft EF rotates.
At a specified point on a highway, vehicles are known to arrive according to a poisson process. Vehicles are counted in 20 second intervals, and vehicle counts are taken in 120 of these time intervals.
Also, at the failure cross sections the diameters are found to be 0.731 in., 0.645 in., and 0.587 in., respectively. Determine the percent elongation and percent reduction in area of each specimen.
An outdoor track is 125m in diameter. A runner increases her speed at a constant rate from 4 to 7 m/s over a distance of 30m. Determine the magnitude of the total acceleration of the runner 2 s after she begins to increase her speed.
A project for constructing a Facility just started. It involves the excavation of 40 to 60 feet deep and 60 feet wide trench to house double tunnels. A 24-inch outside diameter (22.5-inch inside diamater) water line is located in the path of the t..
a belt sander is being brought up to operating speed at the instant of the belt is rotating in the clockwise direction ar 4 ft/s and acceleration at 40 ft/s. the tensioning cylinders A and B have a radius of 2.5 in.
A brass alloy has a yield strength of 280 MPa, a tensile strength of 390 MPa, and an elastic modulus of 105 GPa. A cylindrical specimen of this alloy 12.7 mm in diameter and 250 mm long is stressed in tension and found to elongate 7.6 mm.
An activated sludge process receives 4000m^3 / day containing 120 mg BOD /L from the primary settling tank and 3500 m^3/day Containing 25mg BOD/L from the secondary settling tank.
Explain how the desert air can contain much more h 2 o vapor in the air than the pole, and still a lower humidity than the pole? what causes the difference between dry and moist lapse rate?
A solid steel sphere with a specific gravity of 7.85 and diameter of 0.02 m is falling at its terminal velocity through water at 25 °C. Using either trial-and-error or a graphical approach, determine the velocity of the sphere
A column has a mean capacity of 950 kip. The standard deviation for the column capacity is 50 kip. The average load is 700 kip with a standard deviation of 75 kip. What is the probability of failure, pf
The concentration of BOD (an indicator of organic pollution) in a river just downstream of a sewage treatment plant's effluent pipe is 75 mg/L. If the BOD is destroyed by a first order reaction with rate constant equal to 0.05/day
a rectangular prism box which is floating on water has a length L =1200mm, breadth = 800mm, height = 500mm and mass of 52kg. when the box is loaded with the suspended hexagonal mass, its immersion is 300mm, and when it the mass is placed inside th..
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