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Determine the actual detention time observed in the field of two circular settling tanks with depth 3.5 m that was designed to have an overflow rate not exceeding 60 m3/m2-day and a detention time o
A car dealership offers $2000 cash back; financing at 3.49% APR for 60 months or 0% APR for 60 months when you purchase a car. What is the break even point and when would it be better to choose one
A contractor is considering the purchase of an earthmover to avoid the cost of a rental unit. The earthmover costs $350,000 initially and will cost $7000 per year to store and maintain.
Air flows steadily between two sections in a long, straight portion of 4 in. inside diameter pipe (D1=D2). The uniformly distributed temperature and pressure at each section are p1=100psia, p2=18.4p
The overhang beam has been fabricated with a projected arm BD on it. Draw the internal shear force, bending moment, and normal force diagrams for the beam ABC if it supports a load of 800 lb.
Determine the value and location from point D of the maximum internal bending moment and shear force for the member. Take x = 2 ft. Be sure to draw complete free body diagram(s) for full credit.
One blend that is gaining popularity is E85, which is 85% ethanol and 15% gasoline. E85 is 80% cleaner burning than gasoline alone, and it reduces our dependency on foreign oil. But a flex-fueled ca
Calculate the temperature of "flat world" that has an albedo of 0.31 and a solar flux of 1370 w/m^2. One side of flat world faces the sun. Ignore energy emitted from the edge of flat world.
An agricultural waste lagoon has a total volume of 500 m^3 and has an initial dissolved oxygen (DO) level at the saturation for 20 °C. This waste lagoon receives a discharge of 1,750 L of runoff
A simple steam power plant operates at steady state with water circulating through the components with a mass flow rate of 100 kg/s. Stray heat transfer, kinetic energy and potential energy effects
Drawdown at a 0.20 m diameter, fully penetrating well, which has been pumping at the rate of 1000 m^3/day for a long enough time that steady state conditions have been reached, is determined to be 0
An activated sludge system operates at a flow rate (Q) of 400 m3/day with an incoming BOD (So) of 300 mg/L. Throughout pilot plant work, the kinetic constants for this system are determined to be Y
Knowing that the coefficient of static friction is 0.25 at all surfaces of contact, determine the smallest fprce P that should be applied to one of the wedges.
Consolidation test was conducted on the undisturbed clay sample, and one increment of loading data with time is presented in the following table. At "0" time, the sample height was 2.314 cm, and the
Consider the simply supported beam that has one external load applied to it. At a cross- section that cuts through the carriage bolt, there are 5 points at which the states of stress must be identif
A man having a weight of 167lbattempts to hold himself using one of the two methods. Determine the total force he must exert on bar AB in each case and the normal reaction he exerts on the platform
Determine whether municipal wastewater containing 5 mg/L of selenium is a RCRA hazardous waste
The rotor shafte of a helicopter drives the rotor blades that provide the lifting force and is subjected to a combination of torsion and axial loading. it is known that normal stress is 68 MPa and s
Create a function called [polygon] that draws a polygon in a polar plot. Your function should have a single input paramter - the number of sides.
Based on information provided in the survey bulletins and knowing that the landfill is located in the municipality of Duque de Caxias, on the shore of Guanabara Bay opposite Governor's Island (Galea
How high of a signal source impedance can exist and still provide an output signal from an inverting amplifier circuit. Explain
You are given a mohrs circle with 10 kPa (assume positve since geotech question) in compression for sigmaz and 2 kPa (+ counterclockwise) force for shear z. This force lies on a plane 15 degrees CW.
If a truck has a capacity of 24m^3 (Heaped) and 18m^3 (struck), with a total empty weight of 31600kg (truck), and needs to move soil at a density of 1850kg.m^3 (Bank) with a swell of 41%
Mark's refrigerator has just died. He can get a basic fridge or a more efficient fridge with an Energy Star designation. Mark wants to consider a 10 year planning horizon using an interest rate of 5
Engine Oil at 60 degrees C flows over a 3m long and 2m wide plate whose temperature is maintained at 20 degrees C with a velocity of 2 m/s. Determine the rate of heat transfer from the entire plate.