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During the rainy season in a tropical country, the probability of a day being dry is 0.10. A dry day is defined as one without significant rainfall. Assuming that the number of days until the next dry day is geometrically distributed, what is the length of consecutive wet days that has a probability of occurence of no more than 0.05? Hint: calculate the probability of one wet day, then, 2, then 3, and so on until you hit a number of consecutive wet days with a probability of occurence of less than 0.05.
a gate of 10 ft width and 5 ft long is hinged at point a and held in place by 12 ft long brace as shown in fig. as the
A ground level source is emitting pollution. An air sampler is located 1 km downwind and 0.5km crosswind of the source measures the concentration of the pollutant ant ground level as 10 micrograms/cubic meter.
a) The maximum flow rate that can be achieved without cavitation occurring in the piping system. b) The maximum elevation of the highest point of the piping system to avoid cavitation.
If bod5 and ultimate bod of a municipal wastewater are 200mg/l and 457 mg/l respectively what is the reaction rate constant? a) .265 b) .050 c) .115 d) .165
Suppose that the value of D is 800 when S, ρ, and vare expressed in SI base units. By converting units determine thevalue of D when S, ρ, v are expressed in U.S customary units.
Calculate the pH of a buffer solution prepared by mixing 8.5g KH2PO4 with 43.5g K2HPO4 in 1 liter of water (this is actually the composition of the dilution water used in a BOD test. Follow the same procedures you have been using for previous acid/..
For each radio produced during months 1 and 2, a $10 variable cost is incurred; for each radio produced during month 3, a $12 variable cost is incurred. The inventory cost is $1.5 for each radio in stock at the end of a month.
he top of the soil is level with the top of the wall, and the soil carries a uniformly distributed load of 500 psf. Calculate the total active earth force of the wall per linear foot and determine its point of application
If you hace 80' of flexible hose that is 1.75" ID and a pump that is a 4" and moves fluid at 100gpm, how many gpm would the fluid conimg into the 1.75" flexible hose?
A very long rectangular channel connects two reservoirs and has a longitudinal slope of 0.005. The channel has a width of 10 m and a Manning's n of 0.030.
A soil specimen is 38 mm in diameter and 76 mm long and in its natural condition weighs 168.0 g. When dried completely in an oven the specimen weighs 130.5 g. The value of Gs is 2.73.
Did the moslem caliphates contribute to the fall of rome? if so how?
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