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An underground gasoline storage tank has leaked benzene into an unconfined aquifer over a period of several months. The aquifer characteristics are: Ambient temperature=8 oC Hydraulic conductivity = 123 ft/day Hydraulic gradient = 0.00091 ft/ft Effective porosity = 0.31 Total organic carbon = 198 mg/kg Bulk density = 1.65 g/cm3 What is the average velocity of the groundwater?
A single-stage rocket is launched vertically from rest, and its thrust is programmed to give the rocket a constant upward acceleration of 6 m/s^2 . If the fuel is exhausted 20 s after launch, calculate the maximum velocity and the subsequent maxim..
During an experiment, the depth of a water flow in a flume is measured five times by using a ruler with 1/16-in division. The results from these measurements are 4.88 in, 5.06 in, 5.03 in, 5.13 in, 4.94 in. What is the instrumental error and what ..
Water flows through the pipe contraction shown. for the given 0.2 m difference in the meter level, determine the flowrate as a function of the diameter of the small pipe, D.
Your neighbor has the Bonda generator in the next problem and they have graciously extended a 100 foot extension cord to your home, which has a resistance of 0.0075 ohms per foot of wire (per lead). By how much is the delivered power reduced
Three days later, Abu sees his solicitors and executed the transfer of his said bungalow to Abdul Samad at the said value. Two month later, Abdul Samad expelled Abu from the religious group. Abu now wants to set aside the sale of his bungalow.
Determine the total crop water requirement including the leaching ratio of a corn crop with a ECt of 1.7mmhos cm-1 if the ECiw of the irrigation water and precipitation is 5 and 0 mmhos cm-1 respectively
Important information about Short essay, In managing the uncertainties of ethical issues in engineering, what are some questions that we may ask to limit some of the risk
Water in a pip has a pressure of 22.1 lb/ft2. What is the pressure head?
If a 96-inch brick sewer (n = 0.015) is laid on a slope of 0.01% is set to be rehabilitated with GIPL (n = 0.01) that will need 2-inches all around it. How much more flow, in cfs will be attained with this project
If the BOD5 of a municipal wastewater is 310 mg/L and the BOD U is 340 mg/L, determine the BOD reaction rate constant (base e). What would be the 3 day 30°C BOD Assume, temperature coefficient = 1.047.
What return period must an engineer use in the design of a bridge opening for 50% risk that flooding will occur at least once in two successive years
For a metal and wood structure, how would the economies of construction be obtained (pertaining to the mean and standard deviation of a probability of failure graph)?
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