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A copper bar with a rectangular cross section is held withoutstress between rigid supports. Subsequently, the temperatureof the bar is raised 50 C. Determine the stresses on allfaces of the elements A and B, and show these stresses on sketchesof the elements. alpha=17.5x10^-6/C E=120 GPa
The value of Gs is 2.70. Calculate the void ratio and degree of saturation of the soil. What would be the values of density and water content if the soil were fully saturated at the same void ratio
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
Establish a grass cover over a 10ha landfill. The root zone of the grass is 40cm deep. Increase the volumetric water content of root zone from 12% to 24%. How many cubic meters of water are needed?
Determine the energy loss due to the gradual enlargement from a 25 mm pipe to a 75 mm pipe when the velocity of flow is 3 m/s in the smaller pipe and the cone angle of enlargement is 20°C.
a vertical 12-cm diameter piston-cylinder device contains an ideal gas at the ambient conditions of 1 bar and 24 degrees C. Initially, the inner face of the piston is 20 cmfrom the base of the cylinder.
You have been asked to design a hoisting system and a demolition catch system for the superstructure of a bridge that you are removing. Discuss in detail the steps you would take in order to be able to provide the necessary information
An activated sludge aeration tank has a width of 14m, a length of 15m and an effective liquid depth of 4.5m. The secondary clarifier has a diameter of 25m. The plant operating parameters are as follows
A powerplant is burning coal on a cold, clear winter morning at 8am with a wind speed of 2.6m/s measure at 30m and an inversion layer with its base height of 697m. The effective stack height is 30m.
If the tensil testing machine can apply no more than 925 lbs. of force to the specimen, calculate the maximum rod diameter that should be used. (precision 0.000)?
A $78,000 invtestment in machinery is proposed. It is anticipated that this investment will cause a reduction in net annual operating disbursements fo $16,300 a year for 12 years. The investement will be depreciated for income tax purposes
The peak-hour volumes at two locations were counted and found to be equal. However, the PHFs were .85 at the first location and .60 at the second. Describe the difference between the two locations if t=5 min.
A concrete mix with a 3 inch slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1.700 lb/yd^3 of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
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