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1.Disk A of constant thicness and is at rest when it is placed in contact with belt BC, which moves with constant velocity v. Denoting by uk the coefficient of kinetic fr4iction between the disk and the belt. derive an expression for number of rev executed by t he disk before it attains a constant angular velocity.
2.A 39 ft length of railroad rail of weight 44 lb/ft is lifted by the tongs shown. Determine the force exerted at D and E on tong BDF.
3.How many truckloads of trucks hauling an average volumeof 6 LCY (4.6 LCM) would be required to haul 1 million CCY (764, 600 CCM) of gravel to a dam site?
To provide a source of cooling on this hot Florida day, the piston is now pulled up until the air reaches a temperature of -100C. It can be assumed that the process is a polytropic one with.
Briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why: (a) Molecular weight (b) Degree of crystallinity (c) Deformation by drawing (d) Annealing of an undeformed material
When a fluid flows through a sharp bend, low pressures may develop in localized regions of the bend. Estimate the minimum absolute pressure (pmin in psi) that can develop without causing cavitation if the fluid is water at 80 oF.
THE VERTICAL ANGLES WERE READ AT BOTH ENDS OF THELINE AND THEN AVERAGED USING A CO-AXIAL THEODOLITE/EDM COMBINATION.IF THE ELEVATION OF THE INSTRUMENT STATION IS 630.15 FT
A 300 N force is applied at A. Determine (a) the moment of the 300 N force about D, (b) the magnitude and sense of the horizontal force applied at C that creates the same moment about D,
Drawdown at an observation well 15 m from the pumped well is 3.0 m, and drawdown at a second observation well 150 m away is 0.30 m. find the hydraulic conductivity of the aquifer.
A room 4x5x6 meter is heated by a baseboard resistance heater. We want the heater to raise the room temperature from 7 to 23 deg C in 15 minutes. There are no heat losses from the room, and specific heat may be assumed constant.
Plan 2 has a $40/month access fee, unlimited nights and weekends, 750 anytime minutes plus $0.29/minute for minutes over 750, text messages cost $0.05 each, and roaming cost $0.39/minute whenever she leaves the state.
A 800 m vertical curve joins a -3% grade line to a 5% grade line. The PVI of the curve is at station 6200 and its elevation is 600.6 ft. Compute the elevations at 100-ft stations throughout the curve.
A rigid-walled cubical container is completely filled with water at 40 0F and sealed. The water is then heated to 100 0F. Determine the pressure that develops in the container when the water reaches this higher temperature
A flocculation/sedimentation combination basin in a conventional drinking water treatment plant is to be constructed of cast-in-place reinforced concrete. The horizontal flow rectangular basin will be located in New Jersey, USA.
The "Shape Factor" of a cross-section of a beam is defined as the fully plastic strength divided by the force or moment causing first yield. Thus the Shape Factor for bending is Mp/My and similarly for shear, is Vp/Vy.
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