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Consider a small town in the Phillippines, where the average weight of people is 55 kg, and the average lifespan is 60 years. The people here eat lots of fish due to abundant availability from the local river. The river bed contains 0.0685% Calcium Arsenite Ca3(AsO3)2. The local industries also discharge various salts of cadmium in the river; the concentration of cadmium in water is 30 ppb (parts per billion) and the BCF of cadmium is 1000 L/kg and that of As is 0.00. The potency factor of Arsenic and Cadmium are 17.5 and 56.4 (mg/k-day)^-1. The Ksp of Calcium Arsenite is 4.93 x 10^-15. Consider each person drinks 1.8 L of water per day and eats 75 g of fish per day, 5 days a week. Determine the lifetime risk of a resident.
List the series of steps involved in converting rural land into development. You may refer to an example of local conditions in your reference jurisdiction or you may use a description of such steps that you find from other sources, but do not limit ..
Using the Internet or any other available sources, explain in your own words why the internal energy of an ideal gas can be regarded as function of temperature only.
The settlement of a laboratory 10-cm thick consolidation specimen is 5 mm in 1 hour with a coefficient of consolidation of 0.005cm2/s. What will be the total settlement
given a 22.414 liter volume of air at STP containg: 21.224kPa oxygen, 79.119 kPa nitrrogen, 0.946kPa argon,and 0.036 k carbondioxide. Find the gram molecular weight of the air.
A 4m deep clay layer is underlain by impermeable shale. A sample of clay from the layer is subjected to an appropriate increment of stress in a consolidation test giving the following results
One gram of pepper is placed into a 100 mL beaker, and the beaker is filled with water to the 100 mL mark. What is the concentration of pepper in mg/L? What should one assume in this problem? What is the density of pepper? What is the volume of 1 g o..
At 6% interest, how much money is required in the trust fund to provide for the laboratory and equipment and its perpetual operation and equipment replacement?
Where: Q is the amount of energy added (joules) M is the mass of the fluid (kg) C (subscript p) is the heat capacity of the fluid (joules/kg/K), and Delta T is the change in temperature (K or C degrees) A garage (24 ft x 24 ft x 10 ft) is illuminated..
Design a concrete footing to support a 16in by 16 in column that is 13 feet high with f'c= 6000 psi. The footing has a f'c=3000psi. Assume the the footing base is 5 ft below the grade and the soil is 100 lb/ft with an allowable pressure of 4500lb/ft ..
When making hardness measurements, what will be the effect of making an indentation very close to a preexisting indentation? Why?
a 200 lb divers stands on the end of the diving board. determine the shear force and bending moment diagrams
The mean grade on a final examination was 72, and the standard deviation was 9. The top 10% of the students are to receive A's. What is the minimum grade a student must get in order to receive an A
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