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Alternative R has a first cost of $100,000, annual M&O costs of $50,000, and a $20,000 salvage value after 5 years. Alternative S has a first cost of $175,000 and a $40,000 salvage value after 5 years, but its annual M&O costs are not known. Determine the M&O costs for alternative S that would yield an incremental rate of return of 20% per year.
Draw the shear diagram for the shaft. The bearings at and exert only vertical reactions on the shaft
a reinforced concrete beam with a section of 12 inches width and 24 inches depth is reinforced with 3no. 9 bars. fc'=5000psi and fy=60000psi. a 2 inch cover is used and the beam has a simply supported span lenght of 15ft.
How to draw bending moment diagram for this shape and the value of the moment in critical sections assume that the distributed load (w) KN/M and the concentrated load
Jackie is now exactly 40 years old, and plans to invest a recurring amount over the next 15 years (until age 55) in an account bearing 10% annual interest. She plans to retire at age 65 and live to age 100 (don't we all).
If the car passes point A with a speed of 20m/s and begins to increase its speed at a constant rate of At=0.5m/s^2, determine the magnitude of the car's acceleration when s=100m and x=0.
A uniform ladder with a mass of 15 kg is placed on a frictionless vertical wall. An 80 kg person climbs up the ladder. If the coefficient of friction between the floor and the base of the ladder is 0.15, how far did the person climb
What superelevation rate would you recommend for a roadway with a design speed of 100 km/hr and a radius of curvature of 500 m? Assume f = 0.11.
two links AB and DE are connected by a bell crank as shown. Determine the maximum force that can be safely exerted by link AB on the bell crank if the maximum allowable value for the reaction at C is 1600N.
Cancer is the uncontrolled growth of abnormal cells in the body resulting in tumours that can be benign or malignant (cancerous cells). A proper treatment is necessary to fight with this serious disease.
Assuming steam to be an ideal gas, calculate its specific volume and density at a pressure of 90 lb/in^2 and a temperature of 650°F.
How many gallons of mercury (sg=13.54) would weight the same as 5 gallons of castor oil which has a specific weight of 56.69 pcf?
Tall buildings can develop a significant difference in pressure between the inside and the outside of the building. Air lock entrances are used at the ground level so the pressure at the ground floor is not the same as atmospheric pressure.
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