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1.A .03 m3 rigid tank initially contains R134a at 1.4MPa and 100% quality. the tank is connected by a valve to a supply line that carries R134a at 36 C and 1.6MPa. determine the mass of R134a that had entered
2.Find the center of gravity of the given composite body when the specific weight of brass is .306 lb/in^3 and the specific weight of aluminum is .101 lb/in^3
3.An Element of soil (sand) behind a retaining wall is subjected to an increase in vertical stress of 60kPa and an increase in lateral stress of 25 kPa. Determine the increase in vertical and lateral strains, assuming the soil is a linearly elastic material with E=20MPa and v=.3
4.The tube supports the four parallel forces. Determine the magnitude of the forces and acting at C and D so that the equivalent resultant force of the four forces acts at point O.
A car is traveling toward a 20 degree slope at 60 mph. The wheels have a radius of 12 in, and the car's wheelbase is 100 in. What is the angular rotation rate of the car immediately after the front wheel contacts the slope
The subcritical water level in the channel downstream from the stilling basin is at an elevation of 100 feet above the datum. assume no energy loss over the spillway, determine the invert of the stilling basin required to form a hydraulic jump in ..
Find the angular velocity and angular acceleration needed to keep the prisoner in the beam of the spot light at the moment when the prisoner is 4000 ft away from the spot light.
Draw the shear force and bending moment diagrams for the beam, making sure to include values for the maximum positive and negative bending moments and their locations. Also determine the distance from the left hand end of the beam to the point whe..
A hydraulic jump forms in a horizontal trapezoidal channel. The base width is 4m and the side slopes are 45o. The depths upstream and downstream of the jump are 1m and 3m.
Assume excavation costs at $100/m3, side lining costs at $50/m2, and cover cost at 25/m2. Determine the dimensions of the pit that minimize cost -If the side slope is unconstrained and -If the side slope must me less than 450
A lab test for specific gravity, G, on two samples of lumber indicate that sample A has G= 0.4 and sample B has G= 0.9. Based on this information alone, which wood sample would you choose as a structural member for your construction project
For each subcritcal, critcal, and supercritcal flows, comment on the values for the Froude number, the depth of the water channel, and the specific energy. How do these values compare to each other for each of the flow types
A) Compute the maximum fiber stress. B) If the compression flange of the beam is supported laterally only at the ends of the span, what will be the allowable compressive stress in the extreme fibers
A film of newtonian liquid folws down the outside surface of avertical cylinder of radius R. the flow is steady, laminar andthe thickness of the film is constant.
The total saturated thickness of the aquifer is 15 m. Predict the concentration distribution along the water table after 5110 days, assuming a linear groundwater velocity of 1.6x10-3; dispersivities in x, y, and z of 5.0 m, 0.5 m, and 0.1 m
How much annual income would be need to be generated over a 5 year period to be equivalent to $4,000 over an 8 year period. Consider 6% nominal interest (compounded annually) for both cases.
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