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a gate having the cross section shown in figure closes an opening 5 ft wide and 4 ft high in a water reservoir. the gate weighs 500 lb and its center of gravity is 1 ft to the left of AC and 2 ft above BC. Determine the horizontal reaction that is developed on the gate at C.
Determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions. The average haul speed will be 14 mph and the average return speed will be 20 mph.
Find out the number of turns in each spring, if the diameter of the spring wire 14 mm and the diameter of coil is 80 mm. Assume C=84 GN/mmxmm.
a) What flow rate (m 3/s) does the filter handle during production? b) What volume of water is needed for backwashing plus rising the filter in each filter cycle?
A delivery company accepts only rectangular boxes the sum of whose length and girth (perimeter of a cross section) are equal to 108cm. Find the dimensions of an acceptable box of a largest area.
Does the presence of Mg2+ significantly interfere with the determination of Ca 2+ by the EDTA titration?
Calculate the ozone column amount in DU, corresponding to the pressure profile and ozone concentrations given above. Recall Avogadro's number, NA = 6.0 × 1023 molecules per mole, from which one can calculate [O3]= ..
Air can be assumed as a di-atomic ideal gas. Find the final temperature and the amount of work ( in kW) required for air compression at a rate of 100 mol/s , from an initial condition of 1 bar an 25 C to 10 bar; for the following ways.
Four pumps are to be used in 0.5-m diameter wells at the four corners of the site. Determine the required pumping rate. The aquifer has T = 1600 m^2/day and the wells each have a radius of influence of 600 m.
If the BOD5 of the river below the mill outfall must not exceed 5 mg/L, what percent removal of organic matter (BOD5) is required by the mill to meet this requirement?
The machine part ABC is supported by a frictionless hinge at B and a wedge at C. Knowing that the coefficient of static friction is 0.20 at both surfaces of the wedge, determine:
Concept of CSTR, A lagoon is to be designed to accommodate an input flow of 0.10 m^3/s of nonconservative pollutant with concentration 30.0mg/L and reaction rate 0.20/day
Determine the deflection of the right end of the pointer and the maximum deflection of the beam.
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