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A steel bar, whose ultimate stress is 150,000 psi is subjected to a fluctuating tension-compression axial fatigue load that varies from a maximum of 75,000 lb in tension to a minimum of 25,000 lb in compression. Estimate the minimum bar diameter to prevent fatigue failure.
what is the minimum distance d at which the brakes must be applied to avoid a collision? Treat the train as a particle and assume that the railroad tracks are rectilinear and horizontal.
Your engineering firm decides to build a prototype, and needs screw and nut fasteners as well as resistors and LEDs. There are machinists and electronics technicians available for in-house production. What is the most cost-effective way of acquiri..
Horsepower and efficiency of three-phase motor, If a fully loaded 440V, three-phase motor draws 12.4 A at 86% power factor (pf). It's speed is 1730 rpm and its torque output to a mechanical load is 29.1 lb-ft x 1.356 = 39.5 Nm.
Kinetics of Particles : Newton's Second Law, Determine the maximum theoretical speed that may be achieved over a distance of 50 m by a car starting from rest
A 50 hp motor with an efficiency of 0.80 is to be replaced by a newer model motor with an efficiency of 0.90. The motor is expected to operate 3000 hours per year. The cost of electricity in our area is $0.06 per kWhr.
A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s
Given an aerodynamic body, you have learned in Aerodynamics and Flight Mechanics how to apply the numerical Source Panel Method to this body to determine the velocity and pressure profiles along the surface of the body.
Determine the outlet temperature of the hot fluid.
Effective Matching of Surface Roughness, Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?
Using the required parameters for a typical large size car* and an appropriate frontal Quarter-Car model.
Coefficient Reaction, The removal efficiency of a reactor tank is 73-percent and its residence time is 28.5s
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