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The volume of water in a reservoir is often expressed using the unit of acre-foot. A volume of 1 acre-foot is the amount of water covering an area of 1 acre to a depth of 1 foot. Lake Mead is the largest man-made lake in the United States. It holds approximately 28.5 million acre-feet of water behind the Hoover Dam. If the Army Corp of Engineers desires to discharge 1.25% of the lake volume in a period of 4 days (96 h), what flow of water in gallons per second is required?
At equilibrium, the air space has a volume of 1 L, a total pressure of 1 atm, and a temperature of 298 K. The i mg of formaldehyde (HCHO, MW = 30 g/mol) is injected through the septum into the water.
(a) Determine the desired diameter of the disk. (b) If the rubber strain is not to exceed 0.2 in/in, determine the maximum allowable compressive force. Recall that the spring constant, k=Fx,or in terms of an axially loaded member
Water with a static pressure of 1.96kN/M2 flows through an 800 mm diameter pipe. A pitot tube pressure gage in this pipe reads a pressure of 5.88 kN/M2. How do you determine the volume flow rate (Q) of the water? (Q = 1.40 M^3/sec, V=2.79 M/sec)
The regulatory agency has told the company to maintain a salt level pf no greater then 250 mg/L downstream of the discharge. what should the removal efficiency. (percentage of the salt removed) of a process designed to remove salt from the waste w..
A manometer is used to measure the pressure difference between points A and B in a pipe. Water flows in the pipe, and the specific gravity of the manometer fluid is 2.8. The distances and manometer deflection are indicated.
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.
two links AB and DE are connected by a bell crank as shown. Determine the maximum force that can be safely exerted by link AB on the bell crank if the maximum allowable value for the reaction at C is 1600N.
why is wood more common in residential construction in the US and concrete more common in commercial construction
For a substance that decays according to first-order kinetics, what is the equivalent PF rate constant that would be used to describe treatment in a series of three CM reactors in terms of flow (Q), the total volume in the system (V),
Determine whether these conditions are true or false.
At an axial load of 23 kN, a 40-mm-wide by 10-mm-thick polyimide polymer bar elongates 2.7 mm while the bar width contracts 0.17 mm. The bar is 240 mm long. At the 23-kN load, the stress in the polymer bar is less than its proportional limit.
Measurements indicate that to cause this flow the force acting on the contents of the control volume is 40i lb. Determine the net rate of flow of linear momentum through the control surface.
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