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A hazardous waste incinerator is to burn 200 Kg/h of PCB waste that is 30 % PCB and 70 % organic solvents. During testing phase, the concentration of PCB in the emission was recorded as 0.025 g/ m&s
Assume that you are going to buy a car work $25,000. You will be able to make a down payment of $3,000. The remaining #22,000 will be financed by the dealer. The dealer computes your monthly payment
Find the coeficient of friction between the trusses and the inclined. Three trusses are 1m long 1kg each.
A waste mixture contains a variety of volatile organic compounds, nonvolatile organics, metals, and sandy soil. In a vitrification treatment, a. which of these materials are likely to be retained i
A balloon is to be used to carry meteorological instruments to an elevation of 15,000 ft where the air pressure is 8.1 psia. The balloon is to be filled with helium, and the material from which it i
A steel I beam is supported by a pin at point A and a rocker at B, and a cable applies a 2000lb force. The beam is uniform and weighs 26 lb/ft. Determine the support reactions.
Find the maximum shearing stress and its location in the shaft and the angle of twist of A with respect to C. Let G = 4x10^6 psi for the entire shaft.
In a study it was found that 39% of the bacteria died within 9 hoursand 67% died within 20 hours. If the rate of andwer proportional to the number remaining, how long would it take to obtain a 99.9%
Prepare a preliminary design of a system to collect dust from a plant under the following conditions: Sample of Dust: 50% by wt. below 30 micrometers; 80% by wt. below 70 micrometers Density= 2.5 g/cu
A 2-kg block slides on the smooth circular path (Quadrant One of full circle, block moving left to right). If it is released from rest when theta=0 degrees, determine the force it exerts on the path
An oil-storage area was abandoned 18 years ago. Oil spilled on the ground had saturated the soil at a concentration of 400mg/Kg of soil. A fast food chain now wants to build a restaurant at the site
What pressure gradient along a streamline, dp/ds, is required to accelerate water upwards in a pipe at 0.5 m/s^2 The incline is 1:10, i.e., 1 m upward for every 10 m horizontal
Laboratory clean rooms are often kept at a slightly higher pressure than ambient pressure in order to flush out particulates and keep dust from getting in. If the pressure in such a room is equivale
find the inertia tensor about the origin for a mass of uniform density=1,inside the part of the unit sphere where x>0,y>0,and find the principal moments of inertia and the principal axes.
The force exerted by the potatoes on the frame at one side of the chair is equivalent to horizontal and vertical forces of 24 N and 84 N, respectively, at E and a force of 28 N perpendicular to memb
we have the I-section made of steel (E = 29,000 ksi) which is to be used as a column, pinned at the top, and fixed at the base. Bracing is to be added in the direction of the weak buckling axis, at
A minimum contact time of 30 mins is required to reduce the pathogen concentration from 100 pathogens/L to below 1 pathogen/L through a first order decay process. You plan on treating water at a rat
A mason contracted with a general contractor to build an exterior wall from 8-inch CMUs. The wall is 82 feet long and 8 feet high.16The mason must finish the wall in 3 days and gets paid $4 per bloc
NH4+ = N+ + NH3 pK =9.24 If the pH is 8.5 and the ammonium(NH4+) concentration in 20mg/L, calculate the ammonia(NH3) concentration in mg/L.
Water at 20 C flows in a conduit with a cross-section shaped in the form of an equilateral triangle. The cross-sectional area of the conduit is 100 sqaure meters and e=0.045 mm.
a simple beam with a pin support at A on the left side of my beam, and a roller connection 20 feet away on the far right side of the beam labeled C, with the midspan point (10 feet) labeled B.
The maximum wind pressure on the traffic sign is 200 kg/m2. The maximum allowable shear stress is 350 kg/cm2. Design the traffic pole (only vertical element) against torsion knowing that angle of tw
A layer of normally consolidated clay has been filled with 2m of gravel at a unit weight of 17kN/m3 for a long period of time and the settlement of the clay layer monitored giving a total final sett
At a point in a saturated normally consolidated clay layer the soil is subject to an in-situ vertical effective stress of 50kPa. The soil at the point has a moisture content of 44% and a compression
A soil sample with specific gravity of solids 2.70 has a mass specific gravity of 1.84 Assuming the soil to be perfectly dry,Determine the void ratio.