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if the sphere falls at a speed of 150mm/s, what is the mean velocity relative to the cylinder wall of the water in the gap surrounding the midsection of the sphere
If the effective stack height of the plant is 100 m, and the ground reflects the SO2 emission perfectly what is the SO2 concentration at a sampling point located 2 m above the ground in the town.
Write out the continuity and momentum equations that govern the surge travelling downstream. (Note: assume that the surge velocity exceeds the water velocity)
Demand for a particular product is normally distributed with a mean of 100 units and a standard deviation of 20 per period. if there are 120 units in inventory at the beginning of this period
The 35-in pump of fig. 11.7b is used to pump 24000 GPM of water (68ft) at 710 rpm from a large tank whose surface is at atmospheric presure. the head loss from tank to the pump inlet is 3ft.
How much calcium bicarbonate (kg/day) will need to be added per day in water with alkalinity of 30 mg/L CaCO3 (assume for simplicity only bicarbonate alkalinity is present) if 794 kg of (Al2(SO4)3 x
the pressure drop over 15 m of 2-cm diameter galvanized iron pipe is measured to be 60 Pa. If the pipe is horizontal, estimate the flow rate of water. use for water v=10^-6 m^2/s and density of wate
payments of $1000 are to be made at the end of each year for the next 3 years. What is the present worth of the three payments if interest is 12% compounded monthly
Assume a value of B, compute the allowable bearing capacity, then solve for B. Show at least 1 iteration with whatever assumed width irrespective of whether or not you get the desired Factor of safe
An inventor claims that an engine produces 120 kw with a fuel consumption of 20 kg/h. The energy content of the fuel is 36,00 kJ/kg. The energy is received at a mean temperature of 500C and rejected
What is the maximum load that a .75" diameter steel cable can hold if the UTS of the steel is 145,000 PSI and a safety factor of 1.5 is required.What is the stretch of the 360" cable under this load
The water velocity is estimated to be 3.0 m/sec. Acetone has a density of 0.786 gm/mL and a half-life in water of 20.0 hr. Determine the concentration of acetone in the river due to this pulse relea
its desired to produce 5 cubic yards of cencrete with a ratio of 1:1.8:3.5 of cement, snd, and gravel what are the required amounts of components if 5.5 gallons of water per sack of cement is to be
Use the Rankine cycle. The boiler operates at a 1000 kpa with a maximum temperature of 30 degrees Celsius. The condenser is isobaric and operates at -5 degrees Celsius.
A 3-mi section of a two-lane, two-way highway located in a mountainous terrain is to be designed to carry a peak hour volume of 750 vehicles. Using the operational level of analysis
Assuming the resulting hole acts like an isentropic converging nozzle with a throat diameter of 0.08 cm, calculate the mass flowrate in kg/s of methane that initially escapes from the tank.
An unknown fluid flows through a horizontal 35-mm-diameter pipe with a Reynolds number of 100,000 and a density of 680 kg/m3. The pressure drop across a 21-mm-diameter nozzle meter placed in the pip
The hose has an inside diameter of 2 inches. If viscous effects are neglected (inviscid/frictionless flow) and the hose outlet is 10 feet below the surface of the pond, calculate the volumetric flow
A typical paper clip weighs 0.59 gram and consists of BCC Iron. The density of iron is 7.87 gram/cm3 and its atomic radius is 0.124 nm. What is the volume of a unit cell in (nm)3. What is the volume
Draw and explain a pump curve that illustrates the effect of throttling in the CLOSED direction (i.e., reducing flow) the discharge valve for a constant speed centrifugal pump installed in a cooling
Assume frictionless flow in a long, horizontal, conical pipe. The diameter is 12 inches at one end and 6 inches at the other. The pressure head at the smaller end is 16 feet of water.
At a pumped storage facility, water is pumped from a large reservoir to a point 150 feet above the resevoir. How many feet of head must the pump add to achieve 10,000 lbm/hr flow through a 24 inch p
Water enters a pipe at 100 psig and 70 degrees F. The density of water under these conditions is 62.3 lbm/ft^3. The pipe has an inside diameter of 4.5 inches. The mass flow rate of the water is meas
A divided multilane highway in a recreational area (fp = 0.90) has four lanes (two lanes in each direction) and is on rolling terrain. The highway has 10-ft lanes with a 6-ft right-side shoulder and
Estimate the inside diameter, wall thicknes and outside diameter of the pipe. The carbon steel pipe has tensile yield strength of 250 MPa. Assume safety factore of 2 and a corrosion allowance of 2mm