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A bar with a circular cross-sectional area is made of SAE 1045 carbon steel having a yield stress of sY = 1000 MPa. The bar is subjected to a torque T=3.75 kNm and a bending moment M=7 kNm. Using a factor of safety FS=2 with respect to yielding, determine the required diameter of the bar according to:
(a) the maximum-distortion-energy criterion (Von Mises)(b) the maximum-shearing-stress criterion (Tresca)
How do you calculate the force of water hitting a concrete cylindrical pole. The velocity of the water is 2 ft/s, the depth of the water is 10 ft, and diameter of the pole is 3 ft. So what would be the total force exerted on the pole by the water?
Discuss and use examples to explain the specific factors that you will need to consider when pricing the following items in the bill of quantities foundation excavation
A four-lane urban freeway (two lanes in each direction) is located on rolling terrain and has 12-ft lanes, no lateral obstructions within 6 ft of the pavement edges, and an interchange every 2 miles.
Think of a situation where CAD is a better choice then traditional drafting. Given multiple ways to input coordinates, is one way better than another? Are there situations where you ell use one method over and other?
An elevator weigh 4000kg. When the upward tension in the supporting cable is 48000N what is the upward acceleration Starting from rest, how far does it rise in 3s
an electrical-generation utility sometimes pump liquid water into an elevated reservoir during periods of low electrical consumption. this water is used to generate electricity during periods when the demand for electricity exceeds the utilities a..
a. Use algebra and linearity of the expectation operator to find the answer. b. Explain how the transformation affects the drawing of the scatterplot we used to develop our understanding of covariance, and therefore why the answer to part a. shoul..
A two-phase liquid-vapor mixture of water is initially at a pressure of 10 bars. If on heating at fixed volume, the critical point is attained, determine the quality of the initial state.
Air enters an adiabatic nozzle steadily at 300 kPa, 200?C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm2. Determine (a) the mass flow raw through the nozzle, (b) the exit temperature of the air, and (c) the e..
A four-lane freeway (two lanes in each direction) is on mountainous terrain with 11-ft lanes, a 5-ft right-side shoulder, interchange spacing of one every 10 miles, and a 60-mi/h base free-flow speed.
Two toll booths are open and each can process arrivals (collect tolls) at a mean rate of 12 seconds per vehicle ( the processing time is also exponentially distributed). What is the total time spent in the system by all vehicles in a 1 hour period
A 500 L (132 gal) tank contains 255 mg/L 2,4,6-trichlorophenol dissolved in trichloroethylene (TCE). What is the 2,4,6-trichlorophenol concentration in ppm Assume the temperature of the system is 20 degrees C.
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