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If a mortar is proportioned to 0.11 ft3 of cement, 0,03 ft3 of lime, 0.27 ft3 of water, and 0.50 ft3 of sand, the percent voids in the sand is? (Assume a sand Bulk Specific Gravity Oven-dry of 2.60; of cement 3.15, and lime 2.25 if needed).
Answer choices:
a. 0.0%
b. 1.0%
c. 50.0%
d. 8.0 %
e. None of the above.
For a CSTR, obtain the time variable effluent concentration when the decay rate is zero order. You need to obtain the defining ODE, integrate it and use the initial condition to do this. Then get the steady state solution for this case and solve it ..
Sub 12 means from stage one to two. Heat transfer (Qsub12) occurs to a fluid of mass m whose volume increases at a constant pressure of 21 bar. Assume that the fluid is air (Csubv=0.718 kJ/kg *K and R=0.287 kJ/kg*K) and that Tsub1=725K and Tsub2=1100..
A piston-cylinder device contains 2 kg saturated water vapor at 600 kPa. The water expands adiabatically until the final pressure is 100kPa. And 1,465 kJ work is produced.
Explain how the different physical characteristics and moisture content of soil lead to the different angles of repose, swell, and shrinkage factors. Explain how these factors affect excavation operations and costs.
Find the volume of the given solid region bounded below by the cone z=sqrt(x^2+y^2) and bounded above by the sphere x^2+y^2+z^2=128. using triple intergrals
study the sources for current tuition rates and historical trends of tuition. assume that in the next 20 years tuition will change with a similar trend for all universities .
The search light is rotating at a constant rate of 4 rad per second. Find the magnitude of the velocity and acceleration of the spot of light on the wall when the search light beam makes a 45 degree angle with the wall.
Using a graphical approach, determine the optimal amount of Space Rays and Zappers that need to be produced in order to maximize profits every week. Describe the type of solution you obtained and clearly state your choice of decision variables, objec..
A simply supported beam has a concentrated downward force P at a distance of a from the left support, as shown in the figure below. The flexural rigidity EI is constant. Find the equation of the Elastic Curve by successive integration
A distance of 72.55 ft is recorded using a steel tape weighing 0.016 lb per foot. The tapes is supported only at the ends with a tension of 15 lb. Find the distance corrected for sag.
An undisturbed soil sample has a total unit weight of 19.4 kN/m3, a dry unit weight of 16.9 kN/m3, and a specific gravity of soil solids (Gs) of 2.69. If the sample could be saturated without changing its porosity, calculate the amount of water (i..
Determine the excess pressure inside an 0.5-in-diameter soap bubble floating in air, given the surface tension of the soap solution is 0.0035 lb/ft.
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