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1.Calculate the zero-air-void unit weights for two different soils inib?ft3 at (moisture content)w = 5%, 8%, 10%, 12%. 15%,and 20%, given the specific gravities of the soils as 2.6 and 2.7.Plot each of the curves together on the same figure. Which specificgravity has the larger zero-air-void plot?
2.What is the trancation error for sin(pi/2) if only the firstnon-zero terms of the Maclaurin serie are used? Ignore the roundoff error!
A consolidated-drained triaxial test on a normally consolidated clay yielded a friction angle of 28°. If the all-round confining pressure during the test was 140 kN/m2, what was the major principal stress at failure.
A thin tube of 1/8 in thickness has a mean diameter of 6 in. What is the maximum torque the tube can transmit if the allowable normalstress in compression is 10 ksi?
Assuming the origin is placed where the bullet begins to move, the force (in newtons) exerted by the expanding gas on the bullet is 18000 + 7000x - 20000x2, where x is in meters.
1. draw a plan of a typical strip mine showing all operational features and equipment.2. answer the followinga. why is
A civil engineering student contends that 60 mph is safe in a van because of the higher drivers line of site. If all other design inputs are standard, what must the drivers eye height be in the van for the students claim to be valid
Design a simply supported one-way reinforced concrete floor slab to span 10 ft and carry a service live load of 175 psf and a service dead load of 25 psf. Use fc' = 3000 psi and fy = 60,000 psi. Make the slab thickness to ½-in. increments.
Calculate the Air flow required in CFM to transfer 5,004 BTU/Hour in an HVAC duct given that the temperature difference (Delta-T) between the room and the supply air is 23 DegF.
An investor has invested $250,000 in a new rental property. Her estimated annual costas are $6,000 and annual revenues are $20,000. What rate of return per year will the investor make over a 30-year period ignoring the salvage value
A truck is traveling down a road with a 3-percent grade at a speed of 55 mi/h when the brakes are applied. Knowing the coefficients of friction between the load and the flatbed trailer (us= 0.40) and (uk= 0.35)
Mark's refrigerator has just died. He can get a basic fridge or a more efficient fridge with an Energy Star designation. Mark wants to consider a 10 year planning horizon using an interest rate of 5%.
Assuming the resulting hole acts like an isentropic converging nozzle with a throat diameter of 0.08 cm, calculate the mass flowrate in kg/s of methane that initially escapes from the tank.
An investor bought a tax-free provincial bond, at a cost of $1000 which will pay $50 interest each year for 20 years. The bond will mature in 20 years and return the original $1000.
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