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Derive expressions for the near-tip mode I and mode II stress intensity factors, k1 and k2, respectively, for a center-cracked plate containing a crack which is inclined at an angle ß to the far-field tensile load and subjected to a far-field mode I stress intensity factor, KI. Check your answers with Eq. 9.118.
Determine the height, h, the water level will rise in the tank before remaining constant. Also, if initially the tank is empty, what amount of time will it take for the water level to rise to h? Be sure to justify all assumptions made.
The dimensionless henry's constant for TCE at 25 degrees celsius is 0.4. A sealed glass vial is prepared that has an air volum of 4mL overlying an aquesous volume of 36mL. TCE is added to the aqueous phase so that initally
Compare the relative contributions of a treated water supply and the collection, treatment and disposal of human wastes towards the control of epidemic diseases in developing countries.
The cash flow associated with landscaping and maintaining a certain monument in Washington, D.C., is $100,000 now and $50,000 every 5 years forever. Determine its perpetual equivalent annual worth (in years 1 through infinity)
A soil sample is prepared in the laboratory by mixing a certain amount of dry soil with 10.5 wt% water. The relative density of the grains of the material is equal to 2.7.
An open channel has a vee shaped cross section with sides inclined at an angle of 60o to the vertical. If the rate of flow is 80 dm^3 s^-1 when the depth at the centre is 0.25 m, what must be the slope of the channel assuming Chezy's constant is 45..
General introduction of Portland cement and raw materials used for manufacturing Portland cement & their source
Determine the projected component of the force fac along the axis of strut ao. Express the result as a cartesian vector.
What is the maximum population that can be served by a 900 mm diameter main sewer constructed on minimum grade? If sewage flow in the pipe never exceeds a depth of 600 mm, estimate the actual population contributing flow to the main.
The first alternative is deep-well pumping at an annual cost of $10500. The second alternative is to instal an 18 inch diameter pipeline from a local surface reservoir at a first cost of $25000 and an annual pumping cost of $7000.
A wheeled tractor with high-pressure tires and weighing 74,946 lb is pulled up a 5% slope at uniform speed. If the tension in the tow cable is 13,000 lb, what is the rolling resistance of the road
A single-stage rocket is launched vertically from rest, and its thrust is programmed to give the rocket a constant upward acceleration of 6 m/s^2 . If the fuel is exhausted 20 s after launch, calculate the maximum velocity and the subsequent maxim..
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