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ACME supplies prepackaged steel framed and sheathed storage buildings in kit form. The standard column used is a steel hollow round tube with a wall thickness of 0.4 inches fixed at both ends. A customer has requested a modification to a an existing package requesting that a floor to roof height of 26 feet from the 18 feet now furnished. If ACME wants to keep the factor of safety with respect to the critical load the same for 26 feet as it now provides for 18 feet, what is the minimum size (diameter) 0.4 inch wall thickness column ACME needs to provide in the package to this customer. 5 inch diameter used for 18 ft.
A first order reaction occurs in a PFR at the rate of 2.1 hr^-1. The reactor volume is 1400L and flow is 15 gpm. If the influent concentration is 200 mg/L, then what is the effluent concentration
why the prediction are less than the observed result of connection in tension experiment?
Modeling the skydiver as a particle and assuming that the skydiver follows a perfectly vertical trajectory, determine the average force exerted by the parachute from the moment of deployment until landing.
The preliminary design for a wastewater treatment plant is being developed. The wastewater flow rate is 10,000 m3/day, and the BOD5 concentration is 200 mg/L. The plant discharge standard is 30 mg/L as BOD5.
design a horizontal curve for a two-lane road. The road has 12-ft. lanes. Due to expansive excavation, it is determined that a maximum of 34 ft. can be cleared from the road's centerline toward the inside lane to provide for stopping sight distanc..
Refrigerant 134a enters the compressor of a vapor compression heat pump at 15 psi and 0 °F and is compressed to 160 psi and 160 °F. Liquid enters the expansion valve at 160 psi and 95 °F. At the valve exit the pressure is 15 psi.
Suppose an expert hypothesizes that the probability of a rainfall event causing a particular stormwater retention pond to overtop can be modeled with a beta (a, B ) distribution. Over n years of data collection, the percentages of rainfall events
write a function that calculates the average of a set of numbers. name the function calculate_average. the function should accept one input which is an array of numbers.
Draw block diagrams of the unit operations necessary to treat the following wastes to effluent levels of BOD5 = 200 mg/L, SS = 100 mg/L, P = 5 mg / L (required for discharge into a sanitary sewer).
A trapezoidal canal with a bottom width of 2 m, a side slope Z=1.5, and a longitudinal slope of 0.0006 conveys a flow rate of 3 m^3/s. If the water depth in section 1 is 0.78 m and in section 2
(a) Determine the distance d to the point where he lands. (b)What are the magnitudes of his components of velocity parallel and perpendicular to the 45 degree surface just before he lands
The combustion of 52.8g of butane produces 104.0g of CO2. what is the percentage yield of the reaction
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