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1.A designer intends to use 70 pounds of coarse aggregate in one cubic foot batch of concrete. The bulk specific gravity (Gb) is 2.6 and the unit weight of water is 62.4 lbs/ft3. What percentage of mix volume will the coarse aggregate occupy?
2.A hortizonal rectangular concerte channel terminates in a free outfall. The channel is 4 m wide and carries a discharge of waterr of 12 cubic meters per second. What is the water depth 300 m upstream from the outfall?
3.During a shrinkage limit test on a silty clay, the volume of the dry soil pat was found to be 11.02 cm3 and its dry mass was 22.78 g. If the shrinkage limit was 10.9, what is the density of the soil solids?
4.If we wish to map an area 3.1 miles X 500 feet with 1 foot contours, (photo scale is 1"=250ft); how many photos are required to properly cover the area?
A stack (T=550 F and P=750 mmHg) was sampled using EPA Method 5. The total gas volume that flowed through the dry gas meter was 2.785 cubic meters (at T=60 F and P=800 mmHg).The mass of particles collected was 1.50 g.
What are the important findings in Austin Road Co. v. OSHRC and Builders Steel Co. v. Marshall? Your response should be approximately 200 - 300 words and include a reference citation for your response.
Carnot engine working between a source temperature of T2 and sink temperature of T1 has efficiency of 25%. if the sink temperature is reduced by 20 degrees Celsius the efficiency is increased to 30%. find the source and sink temperature
a buried horizontal concrete pipe (n=0.012) of unknown length needs to be replaces. the length is not known because the original plans for the pipeline route have been lost. the pressure head drop along the segment that needs to be replaced is 29...
Knowing that the collar is releasted from rest at A, develop an equation to determine the velocity of the collar at point B for any given value of k (k-range is 0.1-2.0 lb/in)
Air at 70 degrees Celsius and atmospheric pressure flows with a velocity of 22 fps through a 3-in diameter pipe (e=0.00015 in). Find the friction head loss in 75 ft of pipe.
A sample of 20 yields a mean 32.4. Test the two sided hypothesis that the sample drawn from a population with a mean of 35 for the following cases. (a) if a variance of the population is 33; and (b) if the variance of the population is unknown,
Prescribes that design, to be sustainable, may incorporate the integral linking of two or more components such that each component both derives and supplies benefits from and to the other
a belt sander is being brought up to operating speed at the instant of the belt is rotating in the clockwise direction ar 4 ft/s and acceleration at 40 ft/s. the tensioning cylinders A and B have a radius of 2.5 in.
Start from the values for the density and the kinematic viscosity of CO2 at 15o C and standard atmospheric pressure (101.3 kPa), and first determine the value of the dynamic viscosity at the same conditions.
A tub of a washing machine is rotating at 50 rad/s when the power is turned off. If it takes 15s for the tub to come to rest, determine (a) the constant angular deceleration, and (b) the total number of revolutions the tub makes.
A steady-state, incompressible two-dimensional velocity field (u,v) is given by the following components in the xy-plane u = 0.2 + 1.3x + 0.85y v = -0.5 + 0.95x - 1.3y
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