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During a 1.5-hr storm, 1.3 in. of rain fell during the first hour, and 0.4 in. of rain fell during the last half hour. The average flow in the downspouts was 1.7, 3.6, and 3.4 ft3/sec for each of the half-hour periods. If the rooftop was 3 acres, how deep was the water on the roof at the end of each half-hour period?
Suppose you are a member of an EPA enforcement team investigating the possible dumping of arsenic into Arbor Lake. You take water samples from the middle of the lake and find that the concentration is 90.0 ppb.
Find the magnitude and direction of the force the cable exerts on the pin for the pulleys
State the full name of the section of SOLAS that sets out the minimum standards for the training and competence of crew members and describe how the surveyor would go about checking that a vessel had the necessary number of qualified staff.
On a very hot day, I saw a 1.6 meter long steel bar held between two rigid supports that had buckled due to the heat. The bar had a cross section of 10 mm by 40 mm, and I assume was A36 steel.
Discussion on how sustainability and green engineering can be integrated in the four components of materials science and engineering?
The number of vacancies in some hypothetical metal increases by a factor of 4 when the temperature is increased from 1090 K to 1140 K. Calculate the energy (in J/mol) for vacancy formation assuming that the density of the metal remains the same ov..
To float a 160 pound man using helium balloons (assume 0.52 cubic feet per inflated balloon). How many balloons would it take? Assume density of air is 1.29 kg/cubic meter and the density of helium is 0.179 kg/cubic meter.
Model tests are to be performed to study the flow through a large check valve having an inlet diameter of 2 feet and a volume flowrate Qp of 30 cfs. The working fluid in the model is water at the same temperature as that in the prototype.
An airplane flies at a speed of 360 mph at an altitude of 5000 ft. If the boundary layers on the wing surfaces behave as those on a flat plate, estimate the extent of laminar boundary layer flow along the wing in feet.
Assuming that the CPI (82-84) for March 2013 is 232.773, and your starting salary is $55,000. How much would your starting salary have been in 1983 (assume CPI=100).
Given that uniform flow is subcrital and there is a weir in a rectangular channel, how do you determine what the weir height should be to force the flow to be critical. Draw this transition on a specific energy curve.
An approach to a pretimed signal with a 60 sec cycle has nine vehicles in the queue at the beginning of the effective green. Four of the nine vehicles in the queue are left over from the previous cycle.
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