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A 25-mm-diameter shaft .5 m long is pulled through a cylindrical bearing. The lubricant that fills the 0.3-mm gap between the shaft and bearing is an oil having a kinematic viscosity of 8.0 × 10-4 m2/s and a specific gravity of 0.91. Determine the torque required to rotate the cylinder at a rotational speed of 70 rpm.
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If a mass of 500kg is placed centrally on the top face of the buoy, find the maximum height of its centre of gravity above the bottom of the buoy so that the buoy may remain in stable equilibrium.
Account for chemical reactions, groundwater flows, streams, precipitation, evapotranspiration. Indicate any assumptions that can be made to simplify your equation.
A large residence consumes 3705 kWh of electrical energy over a billing period. Determine the total charge for the billing period based on the rate schedule provided. The margin of error is $0.5
A rectangular concrete channel (n=0.015, S_o = 0.005) has a bottom width of 6.0 m and a discharge rate of 25 m^3/s. 1) Compute the normal depth y_n 2) Compute the critical depth y_c 3) Compute the minimum specific energy E_min
A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per liter. The half-life of 45Ca is 152 days.
A reservoir at elevation 700 ft will supply a second reservoir at elevation 460 ft. The reservoirs are connected by 1300 ft of 24-in cast-iron pipe and 2000 ft of 20-in cast iron pipe in series. What will be the discharge delivered from the upper ..
The hull of a boat has a volme of 150m and the total mass of the boat when empty is 8560kg. determine how much load this boat can carry without sinking in a lake.
The beam is to be hoisted using two chains. Determine the magnitudes of force and acting on each chain in order to develop a resultant force of 500 directed along the positive axis. Set = 41
Analyze the stability of the dam shown in the figure, if the friction coefficient between concrete and foundation is 0.70, and the specific weights of concrete and water are 24kN/m 3 and 10kN/m 3 , respectively.
Determine the compressive strengths of the following: A) A 6-in. diameter concrete cylinder that failed at ta test load of 135,000 B) A-3-in. diameter specimen that failed at a test load of 30,000
Find the area of steel reinforcement required for a concrete T-beam for the following data; f'c = 3 ksi, fy=60 ksi,d=18 in, t= 4.5 in., bw= 10 in., bf= 36 in., 3/4" aggregate, and the section sustains a total factored bending moment 82 k-ft.
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